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You searched for: EV230812 (EV-TRACK ID)

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Experiment number
  • If needed, multiple experiments were identified in a single publication based on differing sample types, separation protocols and/or vesicle types of interest.
Species
  • Species of origin of the EVs.
Separation protocol
  • Gives a short, non-chronological overview of the different steps of the separation protocol.
    • (d)(U)C = (differential) (ultra)centrifugation
    • DG = density gradient
    • UF = ultrafiltration
    • SEC = size-exclusion chromatography
    • IAF = immuno-affinity capture
Details EV-TRACK ID Experiment nr. Species Sample type Separation protocol First author Year EV-METRIC
EV230812 2/14 Streptomyces sp. Mg1 PSK0558 (d)(U)C
DG
Filtration
Hoefler BC 2017 71%

Study summary

Full title
All authors
Hoefler BC, Stubbendieck RM, Josyula NK, Moisan SM, Schulze EM, Straight PD
Journal
Cell Chem Biol
Abstract
Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and (show more...)Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and metal scavengers. Little is known about how specialized metabolites are processed and trafficked for their diverse competitive functions. Linearmycins A and B are linear polyketides with antifungal and antibacterial activity but are colony-localized in imaging mass spectrometry of Streptomyces sp. Mg1 (S. sp. Mg1). To decipher a connection between colony localization and antibiotic activity, we identified the linearmycin gene cluster and investigated linearmycin production and distribution by S. sp. Mg1. Our results uncover a large family of variant linearmycins with limited solubility in aqueous solution. We hypothesized that extracellular vesicles may traffic the lipid-like linearmycins. We found that vesicles isolated from culture supernatants contained linearmycins. Surprisingly, abolishing production of linearmycins in S. sp. Mg1 also diminished extracellular vesicle production. Our results reveal integration of linearmycin biosynthesis with production of extracellular vesicles, suggesting a deep connection between specialized metabolism and bacterial membrane physiology. (hide)
EV-METRIC
71% (96th percentile of all experiments on the same sample type)
 Reported
 Not reported
 Not applicable
EV-enriched proteins
Protein analysis: analysis of three or more EV-enriched proteins
non EV-enriched protein
Protein analysis: assessment of a non-EV-enriched protein
qualitative and quantitative analysis
Particle analysis: implementation of both qualitative and quantitative methods. For the quantitative method, the reporting of measured EV concentration is expected.
electron microscopy images
Particle analysis: inclusion of a widefield and close-up electron microscopy image
density gradient
Separation method: density gradient, at least as validation of results attributed to EVs
EV density
Separation method: reporting of obtained EV density
ultracentrifugation specifics
Separation method: reporting of g-forces, duration and rotor type of ultracentrifugation steps
antibody specifics
Protein analysis: antibody clone/reference number and dilution
lysate preparation
Protein analysis: lysis buffer composition
Study data
Sample type
Cell culture supernatant
Sample origin
ΔlnyI
Focus vesicles
extracellular vesicle
Separation protocol
Separation protocol
  • Gives a short, non-chronological overview of the
    different steps of the separation protocol.
    • dUC = (Differential) (ultra)centrifugation
    • DG = density gradient
    • UF = ultrafiltration
    • SEC = size-exclusion chromatography
    • IAF = immuno-affinity capture
(Differential) (ultra)centrifugation
Density gradient
Filtration
Protein markers
EV: None
non-EV: None
Proteomics
yes
EV density (g/ml)
not specified
Show all info
Study aim
Biogenesis/cargo sorting/Identification of content (omics approaches)
Sample
Species
Streptomyces sp. Mg1
Sample Type
Cell culture supernatant
EV-producing cells
PSK0558
EV-harvesting Medium
Serum free medium
Separation Method
(Differential) (ultra)centrifugation
dUC: centrifugation steps
Between 10,000 g and 50,000 g
Equal to or above 150,000 g
Pelleting performed
Yes
Pelleting: rotor type
Type 45 Ti
Pelleting: speed (g)
235000
Density gradient
Type
Discontinuous
Number of initial discontinuous layers
8
Lowest density fraction
10%
Highest density fraction
50%
Total gradient volume, incl. sample (mL)
14
Sample volume (mL)
1
Orientation
Bottom-up
Speed (g)
100400
Duration (min)
960
Fraction volume (mL)
1
Fraction processing
Centrifugation
Pelleting: volume per fraction
4mL
Pelleting: speed (g)
120000
Pelleting: adjusted k-factor
1.857
Filtration steps
0.22µm or 0.2µm
Characterization: Protein analysis
Protein Concentration Method
Not determined
Proteomics database
No
Characterization: Lipid analysis
No
Characterization: Particle analysis
DLS
EM
EM-type
Transmission­-EM
Image type
Wide-field
EV concentration
Yes
EV230812 3/14 Streptomyces sp. Mg1 PSK0558 (d)(U)C
DG
Filtration
Hoefler BC 2017 71%

Study summary

Full title
All authors
Hoefler BC, Stubbendieck RM, Josyula NK, Moisan SM, Schulze EM, Straight PD
Journal
Cell Chem Biol
Abstract
Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and (show more...)Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and metal scavengers. Little is known about how specialized metabolites are processed and trafficked for their diverse competitive functions. Linearmycins A and B are linear polyketides with antifungal and antibacterial activity but are colony-localized in imaging mass spectrometry of Streptomyces sp. Mg1 (S. sp. Mg1). To decipher a connection between colony localization and antibiotic activity, we identified the linearmycin gene cluster and investigated linearmycin production and distribution by S. sp. Mg1. Our results uncover a large family of variant linearmycins with limited solubility in aqueous solution. We hypothesized that extracellular vesicles may traffic the lipid-like linearmycins. We found that vesicles isolated from culture supernatants contained linearmycins. Surprisingly, abolishing production of linearmycins in S. sp. Mg1 also diminished extracellular vesicle production. Our results reveal integration of linearmycin biosynthesis with production of extracellular vesicles, suggesting a deep connection between specialized metabolism and bacterial membrane physiology. (hide)
EV-METRIC
71% (96th percentile of all experiments on the same sample type)
 Reported
 Not reported
 Not applicable
EV-enriched proteins
Protein analysis: analysis of three or more EV-enriched proteins
non EV-enriched protein
Protein analysis: assessment of a non-EV-enriched protein
qualitative and quantitative analysis
Particle analysis: implementation of both qualitative and quantitative methods. For the quantitative method, the reporting of measured EV concentration is expected.
electron microscopy images
Particle analysis: inclusion of a widefield and close-up electron microscopy image
density gradient
Separation method: density gradient, at least as validation of results attributed to EVs
EV density
Separation method: reporting of obtained EV density
ultracentrifugation specifics
Separation method: reporting of g-forces, duration and rotor type of ultracentrifugation steps
antibody specifics
Protein analysis: antibody clone/reference number and dilution
lysate preparation
Protein analysis: lysis buffer composition
Study data
Sample type
Cell culture supernatant
Sample origin
ΔlnyI + lnyI (complement)
Focus vesicles
extracellular vesicle
Separation protocol
Separation protocol
  • Gives a short, non-chronological overview of the
    different steps of the separation protocol.
    • dUC = (Differential) (ultra)centrifugation
    • DG = density gradient
    • UF = ultrafiltration
    • SEC = size-exclusion chromatography
    • IAF = immuno-affinity capture
(Differential) (ultra)centrifugation
Density gradient
Filtration
Protein markers
EV: None
non-EV: None
Proteomics
yes
EV density (g/ml)
not specified
Show all info
Study aim
Biogenesis/cargo sorting/Identification of content (omics approaches)
Sample
Species
Streptomyces sp. Mg1
Sample Type
Cell culture supernatant
EV-producing cells
PSK0558
EV-harvesting Medium
Serum free medium
Separation Method
(Differential) (ultra)centrifugation
dUC: centrifugation steps
Between 10,000 g and 50,000 g
Equal to or above 150,000 g
Pelleting performed
Yes
Pelleting: rotor type
Type 45 Ti
Pelleting: speed (g)
235000
Density gradient
Type
Discontinuous
Number of initial discontinuous layers
8
Lowest density fraction
10%
Highest density fraction
50%
Total gradient volume, incl. sample (mL)
14
Sample volume (mL)
1
Orientation
Bottom-up
Speed (g)
100400
Duration (min)
960
Fraction volume (mL)
1
Fraction processing
Centrifugation
Pelleting: volume per fraction
4mL
Pelleting: speed (g)
120000
Pelleting: adjusted k-factor
1.857
Filtration steps
0.22µm or 0.2µm
Characterization: Protein analysis
Protein Concentration Method
Not determined
Proteomics database
No
Characterization: Lipid analysis
No
Characterization: Particle analysis
DLS
EM
EM-type
Transmission­-EM
Image type
Wide-field
EV concentration
Yes
EV230812 1/14 Streptomyces sp. Mg1 PSK0558 (d)(U)C
DG
Filtration
Hoefler BC 2017 57%

Study summary

Full title
All authors
Hoefler BC, Stubbendieck RM, Josyula NK, Moisan SM, Schulze EM, Straight PD
Journal
Cell Chem Biol
Abstract
Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and (show more...)Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and metal scavengers. Little is known about how specialized metabolites are processed and trafficked for their diverse competitive functions. Linearmycins A and B are linear polyketides with antifungal and antibacterial activity but are colony-localized in imaging mass spectrometry of Streptomyces sp. Mg1 (S. sp. Mg1). To decipher a connection between colony localization and antibiotic activity, we identified the linearmycin gene cluster and investigated linearmycin production and distribution by S. sp. Mg1. Our results uncover a large family of variant linearmycins with limited solubility in aqueous solution. We hypothesized that extracellular vesicles may traffic the lipid-like linearmycins. We found that vesicles isolated from culture supernatants contained linearmycins. Surprisingly, abolishing production of linearmycins in S. sp. Mg1 also diminished extracellular vesicle production. Our results reveal integration of linearmycin biosynthesis with production of extracellular vesicles, suggesting a deep connection between specialized metabolism and bacterial membrane physiology. (hide)
EV-METRIC
57% (92nd percentile of all experiments on the same sample type)
 Reported
 Not reported
 Not applicable
EV-enriched proteins
Protein analysis: analysis of three or more EV-enriched proteins
non EV-enriched protein
Protein analysis: assessment of a non-EV-enriched protein
qualitative and quantitative analysis
Particle analysis: implementation of both qualitative and quantitative methods. For the quantitative method, the reporting of measured EV concentration is expected.
electron microscopy images
Particle analysis: inclusion of a widefield and close-up electron microscopy image
density gradient
Separation method: density gradient, at least as validation of results attributed to EVs
EV density
Separation method: reporting of obtained EV density
ultracentrifugation specifics
Separation method: reporting of g-forces, duration and rotor type of ultracentrifugation steps
antibody specifics
Protein analysis: antibody clone/reference number and dilution
lysate preparation
Protein analysis: lysis buffer composition
Study data
Sample type
Cell culture supernatant
Sample origin
Control condition
Focus vesicles
extracellular vesicle
Separation protocol
Separation protocol
  • Gives a short, non-chronological overview of the
    different steps of the separation protocol.
    • dUC = (Differential) (ultra)centrifugation
    • DG = density gradient
    • UF = ultrafiltration
    • SEC = size-exclusion chromatography
    • IAF = immuno-affinity capture
(Differential) (ultra)centrifugation
Density gradient
Filtration
Protein markers
EV: None
non-EV: None
Proteomics
yes
EV density (g/ml)
not specified
Show all info
Study aim
Biogenesis/cargo sorting/Identification of content (omics approaches)
Sample
Species
Streptomyces sp. Mg1
Sample Type
Cell culture supernatant
EV-producing cells
PSK0558
EV-harvesting Medium
Serum free medium
Separation Method
(Differential) (ultra)centrifugation
dUC: centrifugation steps
Between 10,000 g and 50,000 g
Equal to or above 150,000 g
Pelleting performed
Yes
Pelleting: rotor type
Type 45 Ti
Pelleting: speed (g)
235000
Density gradient
Type
Discontinuous
Number of initial discontinuous layers
8
Lowest density fraction
10%
Highest density fraction
50%
Total gradient volume, incl. sample (mL)
14
Sample volume (mL)
1
Orientation
Bottom-up
Speed (g)
100400
Duration (min)
960
Fraction volume (mL)
1
Fraction processing
Centrifugation
Pelleting: volume per fraction
4mL
Pelleting: speed (g)
120000
Pelleting: adjusted k-factor
1.857
Filtration steps
0.22µm or 0.2µm
Characterization: Protein analysis
Protein Concentration Method
Not determined
Proteomics database
No
Characterization: Lipid analysis
No
Characterization: Particle analysis
DLS
EM
EM-type
Transmission­-EM
Image type
Wide-field
Extra information
TEM was performed for the time course experiment as well, but no images in paper
EV230812 4/14 Streptomyces sp. Mg1 PSK0558 (d)(U)C
DG
Filtration
Hoefler BC 2017 57%

Study summary

Full title
All authors
Hoefler BC, Stubbendieck RM, Josyula NK, Moisan SM, Schulze EM, Straight PD
Journal
Cell Chem Biol
Abstract
Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and (show more...)Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and metal scavengers. Little is known about how specialized metabolites are processed and trafficked for their diverse competitive functions. Linearmycins A and B are linear polyketides with antifungal and antibacterial activity but are colony-localized in imaging mass spectrometry of Streptomyces sp. Mg1 (S. sp. Mg1). To decipher a connection between colony localization and antibiotic activity, we identified the linearmycin gene cluster and investigated linearmycin production and distribution by S. sp. Mg1. Our results uncover a large family of variant linearmycins with limited solubility in aqueous solution. We hypothesized that extracellular vesicles may traffic the lipid-like linearmycins. We found that vesicles isolated from culture supernatants contained linearmycins. Surprisingly, abolishing production of linearmycins in S. sp. Mg1 also diminished extracellular vesicle production. Our results reveal integration of linearmycin biosynthesis with production of extracellular vesicles, suggesting a deep connection between specialized metabolism and bacterial membrane physiology. (hide)
EV-METRIC
57% (92nd percentile of all experiments on the same sample type)
 Reported
 Not reported
 Not applicable
EV-enriched proteins
Protein analysis: analysis of three or more EV-enriched proteins
non EV-enriched protein
Protein analysis: assessment of a non-EV-enriched protein
qualitative and quantitative analysis
Particle analysis: implementation of both qualitative and quantitative methods. For the quantitative method, the reporting of measured EV concentration is expected.
electron microscopy images
Particle analysis: inclusion of a widefield and close-up electron microscopy image
density gradient
Separation method: density gradient, at least as validation of results attributed to EVs
EV density
Separation method: reporting of obtained EV density
ultracentrifugation specifics
Separation method: reporting of g-forces, duration and rotor type of ultracentrifugation steps
antibody specifics
Protein analysis: antibody clone/reference number and dilution
lysate preparation
Protein analysis: lysis buffer composition
Study data
Sample type
Cell culture supernatant
Sample origin
WT 24h
Focus vesicles
extracellular vesicle
Separation protocol
Separation protocol
  • Gives a short, non-chronological overview of the
    different steps of the separation protocol.
    • dUC = (Differential) (ultra)centrifugation
    • DG = density gradient
    • UF = ultrafiltration
    • SEC = size-exclusion chromatography
    • IAF = immuno-affinity capture
(Differential) (ultra)centrifugation
Density gradient
Filtration
Protein markers
EV: None
non-EV: None
Proteomics
yes
EV density (g/ml)
not specified
Show all info
Study aim
Biogenesis/cargo sorting/Identification of content (omics approaches)
Sample
Species
Streptomyces sp. Mg1
Sample Type
Cell culture supernatant
EV-producing cells
PSK0558
EV-harvesting Medium
Serum free medium
Separation Method
(Differential) (ultra)centrifugation
dUC: centrifugation steps
Between 10,000 g and 50,000 g
Equal to or above 150,000 g
Pelleting performed
Yes
Pelleting: rotor type
Type 45 Ti
Pelleting: speed (g)
235000
Density gradient
Type
Discontinuous
Number of initial discontinuous layers
6
Lowest density fraction
0%
Highest density fraction
50%
Total gradient volume, incl. sample (mL)
2.1
Sample volume (mL)
0.2
Orientation
Bottom-up
Speed (g)
120000
Duration (min)
1020
Fraction volume (mL)
0.2
Fraction processing
Centrifugation
Pelleting: volume per fraction
2.1
Pelleting: speed (g)
120000
Pelleting: adjusted k-factor
TDB
Filtration steps
0.22µm or 0.2µm
Characterization: Protein analysis
Protein Concentration Method
Not determined
Proteomics database
No
Characterization: Lipid analysis
No
Characterization: Particle analysis
None
EV230812 5/14 Streptomyces sp. Mg1 PSK0558 (d)(U)C
DG
Filtration
Hoefler BC 2017 57%

Study summary

Full title
All authors
Hoefler BC, Stubbendieck RM, Josyula NK, Moisan SM, Schulze EM, Straight PD
Journal
Cell Chem Biol
Abstract
Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and (show more...)Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and metal scavengers. Little is known about how specialized metabolites are processed and trafficked for their diverse competitive functions. Linearmycins A and B are linear polyketides with antifungal and antibacterial activity but are colony-localized in imaging mass spectrometry of Streptomyces sp. Mg1 (S. sp. Mg1). To decipher a connection between colony localization and antibiotic activity, we identified the linearmycin gene cluster and investigated linearmycin production and distribution by S. sp. Mg1. Our results uncover a large family of variant linearmycins with limited solubility in aqueous solution. We hypothesized that extracellular vesicles may traffic the lipid-like linearmycins. We found that vesicles isolated from culture supernatants contained linearmycins. Surprisingly, abolishing production of linearmycins in S. sp. Mg1 also diminished extracellular vesicle production. Our results reveal integration of linearmycin biosynthesis with production of extracellular vesicles, suggesting a deep connection between specialized metabolism and bacterial membrane physiology. (hide)
EV-METRIC
57% (92nd percentile of all experiments on the same sample type)
 Reported
 Not reported
 Not applicable
EV-enriched proteins
Protein analysis: analysis of three or more EV-enriched proteins
non EV-enriched protein
Protein analysis: assessment of a non-EV-enriched protein
qualitative and quantitative analysis
Particle analysis: implementation of both qualitative and quantitative methods. For the quantitative method, the reporting of measured EV concentration is expected.
electron microscopy images
Particle analysis: inclusion of a widefield and close-up electron microscopy image
density gradient
Separation method: density gradient, at least as validation of results attributed to EVs
EV density
Separation method: reporting of obtained EV density
ultracentrifugation specifics
Separation method: reporting of g-forces, duration and rotor type of ultracentrifugation steps
antibody specifics
Protein analysis: antibody clone/reference number and dilution
lysate preparation
Protein analysis: lysis buffer composition
Study data
Sample type
Cell culture supernatant
Sample origin
WT 36h
Focus vesicles
extracellular vesicle
Separation protocol
Separation protocol
  • Gives a short, non-chronological overview of the
    different steps of the separation protocol.
    • dUC = (Differential) (ultra)centrifugation
    • DG = density gradient
    • UF = ultrafiltration
    • SEC = size-exclusion chromatography
    • IAF = immuno-affinity capture
(Differential) (ultra)centrifugation
Density gradient
Filtration
Protein markers
EV: None
non-EV: None
Proteomics
yes
EV density (g/ml)
not specified
Show all info
Study aim
Biogenesis/cargo sorting/Identification of content (omics approaches)
Sample
Species
Streptomyces sp. Mg1
Sample Type
Cell culture supernatant
EV-producing cells
PSK0558
EV-harvesting Medium
Serum free medium
Separation Method
(Differential) (ultra)centrifugation
dUC: centrifugation steps
Between 10,000 g and 50,000 g
Equal to or above 150,000 g
Pelleting performed
Yes
Pelleting: rotor type
Type 45 Ti
Pelleting: speed (g)
235000
Density gradient
Type
Discontinuous
Number of initial discontinuous layers
6
Lowest density fraction
0%
Highest density fraction
50%
Total gradient volume, incl. sample (mL)
2.1
Sample volume (mL)
0.2
Orientation
Bottom-up
Speed (g)
120000
Duration (min)
1020
Fraction volume (mL)
0.2
Fraction processing
Centrifugation
Pelleting: volume per fraction
2.1
Pelleting: speed (g)
120000
Pelleting: adjusted k-factor
TDB
Filtration steps
0.22µm or 0.2µm
Characterization: Protein analysis
Protein Concentration Method
Not determined
Proteomics database
No
Characterization: Lipid analysis
No
Characterization: Particle analysis
None
EV230812 6/14 Streptomyces sp. Mg1 PSK0558 (d)(U)C
DG
Filtration
Hoefler BC 2017 57%

Study summary

Full title
All authors
Hoefler BC, Stubbendieck RM, Josyula NK, Moisan SM, Schulze EM, Straight PD
Journal
Cell Chem Biol
Abstract
Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and (show more...)Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and metal scavengers. Little is known about how specialized metabolites are processed and trafficked for their diverse competitive functions. Linearmycins A and B are linear polyketides with antifungal and antibacterial activity but are colony-localized in imaging mass spectrometry of Streptomyces sp. Mg1 (S. sp. Mg1). To decipher a connection between colony localization and antibiotic activity, we identified the linearmycin gene cluster and investigated linearmycin production and distribution by S. sp. Mg1. Our results uncover a large family of variant linearmycins with limited solubility in aqueous solution. We hypothesized that extracellular vesicles may traffic the lipid-like linearmycins. We found that vesicles isolated from culture supernatants contained linearmycins. Surprisingly, abolishing production of linearmycins in S. sp. Mg1 also diminished extracellular vesicle production. Our results reveal integration of linearmycin biosynthesis with production of extracellular vesicles, suggesting a deep connection between specialized metabolism and bacterial membrane physiology. (hide)
EV-METRIC
57% (92nd percentile of all experiments on the same sample type)
 Reported
 Not reported
 Not applicable
EV-enriched proteins
Protein analysis: analysis of three or more EV-enriched proteins
non EV-enriched protein
Protein analysis: assessment of a non-EV-enriched protein
qualitative and quantitative analysis
Particle analysis: implementation of both qualitative and quantitative methods. For the quantitative method, the reporting of measured EV concentration is expected.
electron microscopy images
Particle analysis: inclusion of a widefield and close-up electron microscopy image
density gradient
Separation method: density gradient, at least as validation of results attributed to EVs
EV density
Separation method: reporting of obtained EV density
ultracentrifugation specifics
Separation method: reporting of g-forces, duration and rotor type of ultracentrifugation steps
antibody specifics
Protein analysis: antibody clone/reference number and dilution
lysate preparation
Protein analysis: lysis buffer composition
Study data
Sample type
Cell culture supernatant
Sample origin
WT 48h
Focus vesicles
extracellular vesicle
Separation protocol
Separation protocol
  • Gives a short, non-chronological overview of the
    different steps of the separation protocol.
    • dUC = (Differential) (ultra)centrifugation
    • DG = density gradient
    • UF = ultrafiltration
    • SEC = size-exclusion chromatography
    • IAF = immuno-affinity capture
(Differential) (ultra)centrifugation
Density gradient
Filtration
Protein markers
EV: None
non-EV: None
Proteomics
yes
EV density (g/ml)
not specified
Show all info
Study aim
Biogenesis/cargo sorting/Identification of content (omics approaches)
Sample
Species
Streptomyces sp. Mg1
Sample Type
Cell culture supernatant
EV-producing cells
PSK0558
EV-harvesting Medium
Serum free medium
Separation Method
(Differential) (ultra)centrifugation
dUC: centrifugation steps
Between 10,000 g and 50,000 g
Equal to or above 150,000 g
Pelleting performed
Yes
Pelleting: rotor type
Type 45 Ti
Pelleting: speed (g)
235000
Density gradient
Type
Discontinuous
Number of initial discontinuous layers
6
Lowest density fraction
0%
Highest density fraction
50%
Total gradient volume, incl. sample (mL)
2.1
Sample volume (mL)
0.2
Orientation
Bottom-up
Speed (g)
120000
Duration (min)
1020
Fraction volume (mL)
0.2
Fraction processing
Centrifugation
Pelleting: volume per fraction
2.1
Pelleting: speed (g)
120000
Pelleting: adjusted k-factor
TDB
Filtration steps
0.22µm or 0.2µm
Characterization: Protein analysis
Protein Concentration Method
Not determined
Proteomics database
No
Characterization: Lipid analysis
No
Characterization: Particle analysis
None
EV230812 7/14 Streptomyces sp. Mg1 PSK0558 (d)(U)C
DG
Filtration
Hoefler BC 2017 57%

Study summary

Full title
All authors
Hoefler BC, Stubbendieck RM, Josyula NK, Moisan SM, Schulze EM, Straight PD
Journal
Cell Chem Biol
Abstract
Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and (show more...)Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and metal scavengers. Little is known about how specialized metabolites are processed and trafficked for their diverse competitive functions. Linearmycins A and B are linear polyketides with antifungal and antibacterial activity but are colony-localized in imaging mass spectrometry of Streptomyces sp. Mg1 (S. sp. Mg1). To decipher a connection between colony localization and antibiotic activity, we identified the linearmycin gene cluster and investigated linearmycin production and distribution by S. sp. Mg1. Our results uncover a large family of variant linearmycins with limited solubility in aqueous solution. We hypothesized that extracellular vesicles may traffic the lipid-like linearmycins. We found that vesicles isolated from culture supernatants contained linearmycins. Surprisingly, abolishing production of linearmycins in S. sp. Mg1 also diminished extracellular vesicle production. Our results reveal integration of linearmycin biosynthesis with production of extracellular vesicles, suggesting a deep connection between specialized metabolism and bacterial membrane physiology. (hide)
EV-METRIC
57% (92nd percentile of all experiments on the same sample type)
 Reported
 Not reported
 Not applicable
EV-enriched proteins
Protein analysis: analysis of three or more EV-enriched proteins
non EV-enriched protein
Protein analysis: assessment of a non-EV-enriched protein
qualitative and quantitative analysis
Particle analysis: implementation of both qualitative and quantitative methods. For the quantitative method, the reporting of measured EV concentration is expected.
electron microscopy images
Particle analysis: inclusion of a widefield and close-up electron microscopy image
density gradient
Separation method: density gradient, at least as validation of results attributed to EVs
EV density
Separation method: reporting of obtained EV density
ultracentrifugation specifics
Separation method: reporting of g-forces, duration and rotor type of ultracentrifugation steps
antibody specifics
Protein analysis: antibody clone/reference number and dilution
lysate preparation
Protein analysis: lysis buffer composition
Study data
Sample type
Cell culture supernatant
Sample origin
WT 72h
Focus vesicles
extracellular vesicle
Separation protocol
Separation protocol
  • Gives a short, non-chronological overview of the
    different steps of the separation protocol.
    • dUC = (Differential) (ultra)centrifugation
    • DG = density gradient
    • UF = ultrafiltration
    • SEC = size-exclusion chromatography
    • IAF = immuno-affinity capture
(Differential) (ultra)centrifugation
Density gradient
Filtration
Protein markers
EV: None
non-EV: None
Proteomics
yes
EV density (g/ml)
not specified
Show all info
Study aim
Biogenesis/cargo sorting/Identification of content (omics approaches)
Sample
Species
Streptomyces sp. Mg1
Sample Type
Cell culture supernatant
EV-producing cells
PSK0558
EV-harvesting Medium
Serum free medium
Separation Method
(Differential) (ultra)centrifugation
dUC: centrifugation steps
Between 10,000 g and 50,000 g
Equal to or above 150,000 g
Pelleting performed
Yes
Pelleting: rotor type
Type 45 Ti
Pelleting: speed (g)
235000
Density gradient
Type
Discontinuous
Number of initial discontinuous layers
6
Lowest density fraction
0%
Highest density fraction
50%
Total gradient volume, incl. sample (mL)
2.1
Sample volume (mL)
0.2
Orientation
Bottom-up
Speed (g)
120000
Duration (min)
1020
Fraction volume (mL)
0.2
Fraction processing
Centrifugation
Pelleting: volume per fraction
2.1
Pelleting: speed (g)
120000
Pelleting: adjusted k-factor
TDB
Filtration steps
0.22µm or 0.2µm
Characterization: Protein analysis
Protein Concentration Method
Not determined
Proteomics database
No
Characterization: Lipid analysis
No
Characterization: Particle analysis
None
EV230812 8/14 Streptomyces sp. Mg1 PSK0558 (d)(U)C
DG
Filtration
Hoefler BC 2017 57%

Study summary

Full title
All authors
Hoefler BC, Stubbendieck RM, Josyula NK, Moisan SM, Schulze EM, Straight PD
Journal
Cell Chem Biol
Abstract
Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and (show more...)Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and metal scavengers. Little is known about how specialized metabolites are processed and trafficked for their diverse competitive functions. Linearmycins A and B are linear polyketides with antifungal and antibacterial activity but are colony-localized in imaging mass spectrometry of Streptomyces sp. Mg1 (S. sp. Mg1). To decipher a connection between colony localization and antibiotic activity, we identified the linearmycin gene cluster and investigated linearmycin production and distribution by S. sp. Mg1. Our results uncover a large family of variant linearmycins with limited solubility in aqueous solution. We hypothesized that extracellular vesicles may traffic the lipid-like linearmycins. We found that vesicles isolated from culture supernatants contained linearmycins. Surprisingly, abolishing production of linearmycins in S. sp. Mg1 also diminished extracellular vesicle production. Our results reveal integration of linearmycin biosynthesis with production of extracellular vesicles, suggesting a deep connection between specialized metabolism and bacterial membrane physiology. (hide)
EV-METRIC
57% (92nd percentile of all experiments on the same sample type)
 Reported
 Not reported
 Not applicable
EV-enriched proteins
Protein analysis: analysis of three or more EV-enriched proteins
non EV-enriched protein
Protein analysis: assessment of a non-EV-enriched protein
qualitative and quantitative analysis
Particle analysis: implementation of both qualitative and quantitative methods. For the quantitative method, the reporting of measured EV concentration is expected.
electron microscopy images
Particle analysis: inclusion of a widefield and close-up electron microscopy image
density gradient
Separation method: density gradient, at least as validation of results attributed to EVs
EV density
Separation method: reporting of obtained EV density
ultracentrifugation specifics
Separation method: reporting of g-forces, duration and rotor type of ultracentrifugation steps
antibody specifics
Protein analysis: antibody clone/reference number and dilution
lysate preparation
Protein analysis: lysis buffer composition
Study data
Sample type
Cell culture supernatant
Sample origin
WT 96h
Focus vesicles
extracellular vesicle
Separation protocol
Separation protocol
  • Gives a short, non-chronological overview of the
    different steps of the separation protocol.
    • dUC = (Differential) (ultra)centrifugation
    • DG = density gradient
    • UF = ultrafiltration
    • SEC = size-exclusion chromatography
    • IAF = immuno-affinity capture
(Differential) (ultra)centrifugation
Density gradient
Filtration
Protein markers
EV: None
non-EV: None
Proteomics
yes
EV density (g/ml)
not specified
Show all info
Study aim
Biogenesis/cargo sorting/Identification of content (omics approaches)
Sample
Species
Streptomyces sp. Mg1
Sample Type
Cell culture supernatant
EV-producing cells
PSK0558
EV-harvesting Medium
Serum free medium
Separation Method
(Differential) (ultra)centrifugation
dUC: centrifugation steps
Between 10,000 g and 50,000 g
Equal to or above 150,000 g
Pelleting performed
Yes
Pelleting: rotor type
Type 45 Ti
Pelleting: speed (g)
235000
Density gradient
Type
Discontinuous
Number of initial discontinuous layers
6
Lowest density fraction
0%
Highest density fraction
50%
Total gradient volume, incl. sample (mL)
2.1
Sample volume (mL)
0.2
Orientation
Bottom-up
Speed (g)
120000
Duration (min)
1020
Fraction volume (mL)
0.2
Fraction processing
Centrifugation
Pelleting: volume per fraction
2.1
Pelleting: speed (g)
120000
Pelleting: adjusted k-factor
TDB
Filtration steps
0.22µm or 0.2µm
Characterization: Protein analysis
Protein Concentration Method
Not determined
Proteomics database
No
Characterization: Lipid analysis
No
Characterization: Particle analysis
None
EV230812 9/14 Streptomyces sp. Mg1 PSK0558 (d)(U)C
DG
Filtration
Hoefler BC 2017 57%

Study summary

Full title
All authors
Hoefler BC, Stubbendieck RM, Josyula NK, Moisan SM, Schulze EM, Straight PD
Journal
Cell Chem Biol
Abstract
Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and (show more...)Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and metal scavengers. Little is known about how specialized metabolites are processed and trafficked for their diverse competitive functions. Linearmycins A and B are linear polyketides with antifungal and antibacterial activity but are colony-localized in imaging mass spectrometry of Streptomyces sp. Mg1 (S. sp. Mg1). To decipher a connection between colony localization and antibiotic activity, we identified the linearmycin gene cluster and investigated linearmycin production and distribution by S. sp. Mg1. Our results uncover a large family of variant linearmycins with limited solubility in aqueous solution. We hypothesized that extracellular vesicles may traffic the lipid-like linearmycins. We found that vesicles isolated from culture supernatants contained linearmycins. Surprisingly, abolishing production of linearmycins in S. sp. Mg1 also diminished extracellular vesicle production. Our results reveal integration of linearmycin biosynthesis with production of extracellular vesicles, suggesting a deep connection between specialized metabolism and bacterial membrane physiology. (hide)
EV-METRIC
57% (92nd percentile of all experiments on the same sample type)
 Reported
 Not reported
 Not applicable
EV-enriched proteins
Protein analysis: analysis of three or more EV-enriched proteins
non EV-enriched protein
Protein analysis: assessment of a non-EV-enriched protein
qualitative and quantitative analysis
Particle analysis: implementation of both qualitative and quantitative methods. For the quantitative method, the reporting of measured EV concentration is expected.
electron microscopy images
Particle analysis: inclusion of a widefield and close-up electron microscopy image
density gradient
Separation method: density gradient, at least as validation of results attributed to EVs
EV density
Separation method: reporting of obtained EV density
ultracentrifugation specifics
Separation method: reporting of g-forces, duration and rotor type of ultracentrifugation steps
antibody specifics
Protein analysis: antibody clone/reference number and dilution
lysate preparation
Protein analysis: lysis buffer composition
Study data
Sample type
Cell culture supernatant
Sample origin
ΔlnyI 24h
Focus vesicles
extracellular vesicle
Separation protocol
Separation protocol
  • Gives a short, non-chronological overview of the
    different steps of the separation protocol.
    • dUC = (Differential) (ultra)centrifugation
    • DG = density gradient
    • UF = ultrafiltration
    • SEC = size-exclusion chromatography
    • IAF = immuno-affinity capture
(Differential) (ultra)centrifugation
Density gradient
Filtration
Protein markers
EV: None
non-EV: None
Proteomics
yes
EV density (g/ml)
not specified
Show all info
Study aim
Biogenesis/cargo sorting/Identification of content (omics approaches)
Sample
Species
Streptomyces sp. Mg1
Sample Type
Cell culture supernatant
EV-producing cells
PSK0558
EV-harvesting Medium
Serum free medium
Separation Method
(Differential) (ultra)centrifugation
dUC: centrifugation steps
Between 10,000 g and 50,000 g
Equal to or above 150,000 g
Pelleting performed
Yes
Pelleting: rotor type
Type 45 Ti
Pelleting: speed (g)
235000
Density gradient
Type
Discontinuous
Number of initial discontinuous layers
6
Lowest density fraction
0%
Highest density fraction
50%
Total gradient volume, incl. sample (mL)
2.1
Sample volume (mL)
0.2
Orientation
Bottom-up
Speed (g)
120000
Duration (min)
1020
Fraction volume (mL)
0.2
Fraction processing
Centrifugation
Pelleting: volume per fraction
2.1
Pelleting: speed (g)
120000
Pelleting: adjusted k-factor
TDB
Filtration steps
0.22µm or 0.2µm
Characterization: Protein analysis
Protein Concentration Method
Not determined
Proteomics database
No
Characterization: Lipid analysis
No
Characterization: Particle analysis
None
EV230812 10/14 Streptomyces sp. Mg1 PSK0558 (d)(U)C
DG
Filtration
Hoefler BC 2017 57%

Study summary

Full title
All authors
Hoefler BC, Stubbendieck RM, Josyula NK, Moisan SM, Schulze EM, Straight PD
Journal
Cell Chem Biol
Abstract
Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and (show more...)Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and metal scavengers. Little is known about how specialized metabolites are processed and trafficked for their diverse competitive functions. Linearmycins A and B are linear polyketides with antifungal and antibacterial activity but are colony-localized in imaging mass spectrometry of Streptomyces sp. Mg1 (S. sp. Mg1). To decipher a connection between colony localization and antibiotic activity, we identified the linearmycin gene cluster and investigated linearmycin production and distribution by S. sp. Mg1. Our results uncover a large family of variant linearmycins with limited solubility in aqueous solution. We hypothesized that extracellular vesicles may traffic the lipid-like linearmycins. We found that vesicles isolated from culture supernatants contained linearmycins. Surprisingly, abolishing production of linearmycins in S. sp. Mg1 also diminished extracellular vesicle production. Our results reveal integration of linearmycin biosynthesis with production of extracellular vesicles, suggesting a deep connection between specialized metabolism and bacterial membrane physiology. (hide)
EV-METRIC
57% (92nd percentile of all experiments on the same sample type)
 Reported
 Not reported
 Not applicable
EV-enriched proteins
Protein analysis: analysis of three or more EV-enriched proteins
non EV-enriched protein
Protein analysis: assessment of a non-EV-enriched protein
qualitative and quantitative analysis
Particle analysis: implementation of both qualitative and quantitative methods. For the quantitative method, the reporting of measured EV concentration is expected.
electron microscopy images
Particle analysis: inclusion of a widefield and close-up electron microscopy image
density gradient
Separation method: density gradient, at least as validation of results attributed to EVs
EV density
Separation method: reporting of obtained EV density
ultracentrifugation specifics
Separation method: reporting of g-forces, duration and rotor type of ultracentrifugation steps
antibody specifics
Protein analysis: antibody clone/reference number and dilution
lysate preparation
Protein analysis: lysis buffer composition
Study data
Sample type
Cell culture supernatant
Sample origin
ΔlnyI 36h
Focus vesicles
extracellular vesicle
Separation protocol
Separation protocol
  • Gives a short, non-chronological overview of the
    different steps of the separation protocol.
    • dUC = (Differential) (ultra)centrifugation
    • DG = density gradient
    • UF = ultrafiltration
    • SEC = size-exclusion chromatography
    • IAF = immuno-affinity capture
(Differential) (ultra)centrifugation
Density gradient
Filtration
Protein markers
EV: None
non-EV: None
Proteomics
yes
EV density (g/ml)
not specified
Show all info
Study aim
Biogenesis/cargo sorting/Identification of content (omics approaches)
Sample
Species
Streptomyces sp. Mg1
Sample Type
Cell culture supernatant
EV-producing cells
PSK0558
EV-harvesting Medium
Serum free medium
Separation Method
(Differential) (ultra)centrifugation
dUC: centrifugation steps
Between 10,000 g and 50,000 g
Equal to or above 150,000 g
Pelleting performed
Yes
Pelleting: rotor type
Type 45 Ti
Pelleting: speed (g)
235000
Density gradient
Type
Discontinuous
Number of initial discontinuous layers
6
Lowest density fraction
0%
Highest density fraction
50%
Total gradient volume, incl. sample (mL)
2.1
Sample volume (mL)
0.2
Orientation
Bottom-up
Speed (g)
120000
Duration (min)
1020
Fraction volume (mL)
0.2
Fraction processing
Centrifugation
Pelleting: volume per fraction
2.1
Pelleting: speed (g)
120000
Pelleting: adjusted k-factor
TDB
Filtration steps
0.22µm or 0.2µm
Characterization: Protein analysis
Protein Concentration Method
Not determined
Proteomics database
No
Characterization: Lipid analysis
No
Characterization: Particle analysis
None
EV230812 11/14 Streptomyces sp. Mg1 PSK0558 (d)(U)C
DG
Filtration
Hoefler BC 2017 57%

Study summary

Full title
All authors
Hoefler BC, Stubbendieck RM, Josyula NK, Moisan SM, Schulze EM, Straight PD
Journal
Cell Chem Biol
Abstract
Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and (show more...)Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and metal scavengers. Little is known about how specialized metabolites are processed and trafficked for their diverse competitive functions. Linearmycins A and B are linear polyketides with antifungal and antibacterial activity but are colony-localized in imaging mass spectrometry of Streptomyces sp. Mg1 (S. sp. Mg1). To decipher a connection between colony localization and antibiotic activity, we identified the linearmycin gene cluster and investigated linearmycin production and distribution by S. sp. Mg1. Our results uncover a large family of variant linearmycins with limited solubility in aqueous solution. We hypothesized that extracellular vesicles may traffic the lipid-like linearmycins. We found that vesicles isolated from culture supernatants contained linearmycins. Surprisingly, abolishing production of linearmycins in S. sp. Mg1 also diminished extracellular vesicle production. Our results reveal integration of linearmycin biosynthesis with production of extracellular vesicles, suggesting a deep connection between specialized metabolism and bacterial membrane physiology. (hide)
EV-METRIC
57% (92nd percentile of all experiments on the same sample type)
 Reported
 Not reported
 Not applicable
EV-enriched proteins
Protein analysis: analysis of three or more EV-enriched proteins
non EV-enriched protein
Protein analysis: assessment of a non-EV-enriched protein
qualitative and quantitative analysis
Particle analysis: implementation of both qualitative and quantitative methods. For the quantitative method, the reporting of measured EV concentration is expected.
electron microscopy images
Particle analysis: inclusion of a widefield and close-up electron microscopy image
density gradient
Separation method: density gradient, at least as validation of results attributed to EVs
EV density
Separation method: reporting of obtained EV density
ultracentrifugation specifics
Separation method: reporting of g-forces, duration and rotor type of ultracentrifugation steps
antibody specifics
Protein analysis: antibody clone/reference number and dilution
lysate preparation
Protein analysis: lysis buffer composition
Study data
Sample type
Cell culture supernatant
Sample origin
ΔlnyI 48h
Focus vesicles
extracellular vesicle
Separation protocol
Separation protocol
  • Gives a short, non-chronological overview of the
    different steps of the separation protocol.
    • dUC = (Differential) (ultra)centrifugation
    • DG = density gradient
    • UF = ultrafiltration
    • SEC = size-exclusion chromatography
    • IAF = immuno-affinity capture
(Differential) (ultra)centrifugation
Density gradient
Filtration
Protein markers
EV: None
non-EV: None
Proteomics
yes
EV density (g/ml)
not specified
Show all info
Study aim
Biogenesis/cargo sorting/Identification of content (omics approaches)
Sample
Species
Streptomyces sp. Mg1
Sample Type
Cell culture supernatant
EV-producing cells
PSK0558
EV-harvesting Medium
Serum free medium
Separation Method
(Differential) (ultra)centrifugation
dUC: centrifugation steps
Between 10,000 g and 50,000 g
Equal to or above 150,000 g
Pelleting performed
Yes
Pelleting: rotor type
Type 45 Ti
Pelleting: speed (g)
235000
Density gradient
Type
Discontinuous
Number of initial discontinuous layers
6
Lowest density fraction
0%
Highest density fraction
50%
Total gradient volume, incl. sample (mL)
2.1
Sample volume (mL)
0.2
Orientation
Bottom-up
Speed (g)
120000
Duration (min)
1020
Fraction volume (mL)
0.2
Fraction processing
Centrifugation
Pelleting: volume per fraction
2.1
Pelleting: speed (g)
120000
Pelleting: adjusted k-factor
TDB
Filtration steps
0.22µm or 0.2µm
Characterization: Protein analysis
Protein Concentration Method
Not determined
Proteomics database
No
Characterization: Lipid analysis
No
Characterization: Particle analysis
None
EV230812 12/14 Streptomyces sp. Mg1 PSK0558 (d)(U)C
DG
Filtration
Hoefler BC 2017 57%

Study summary

Full title
All authors
Hoefler BC, Stubbendieck RM, Josyula NK, Moisan SM, Schulze EM, Straight PD
Journal
Cell Chem Biol
Abstract
Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and (show more...)Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and metal scavengers. Little is known about how specialized metabolites are processed and trafficked for their diverse competitive functions. Linearmycins A and B are linear polyketides with antifungal and antibacterial activity but are colony-localized in imaging mass spectrometry of Streptomyces sp. Mg1 (S. sp. Mg1). To decipher a connection between colony localization and antibiotic activity, we identified the linearmycin gene cluster and investigated linearmycin production and distribution by S. sp. Mg1. Our results uncover a large family of variant linearmycins with limited solubility in aqueous solution. We hypothesized that extracellular vesicles may traffic the lipid-like linearmycins. We found that vesicles isolated from culture supernatants contained linearmycins. Surprisingly, abolishing production of linearmycins in S. sp. Mg1 also diminished extracellular vesicle production. Our results reveal integration of linearmycin biosynthesis with production of extracellular vesicles, suggesting a deep connection between specialized metabolism and bacterial membrane physiology. (hide)
EV-METRIC
57% (92nd percentile of all experiments on the same sample type)
 Reported
 Not reported
 Not applicable
EV-enriched proteins
Protein analysis: analysis of three or more EV-enriched proteins
non EV-enriched protein
Protein analysis: assessment of a non-EV-enriched protein
qualitative and quantitative analysis
Particle analysis: implementation of both qualitative and quantitative methods. For the quantitative method, the reporting of measured EV concentration is expected.
electron microscopy images
Particle analysis: inclusion of a widefield and close-up electron microscopy image
density gradient
Separation method: density gradient, at least as validation of results attributed to EVs
EV density
Separation method: reporting of obtained EV density
ultracentrifugation specifics
Separation method: reporting of g-forces, duration and rotor type of ultracentrifugation steps
antibody specifics
Protein analysis: antibody clone/reference number and dilution
lysate preparation
Protein analysis: lysis buffer composition
Study data
Sample type
Cell culture supernatant
Sample origin
ΔlnyI 72h
Focus vesicles
extracellular vesicle
Separation protocol
Separation protocol
  • Gives a short, non-chronological overview of the
    different steps of the separation protocol.
    • dUC = (Differential) (ultra)centrifugation
    • DG = density gradient
    • UF = ultrafiltration
    • SEC = size-exclusion chromatography
    • IAF = immuno-affinity capture
(Differential) (ultra)centrifugation
Density gradient
Filtration
Protein markers
EV: None
non-EV: None
Proteomics
yes
EV density (g/ml)
not specified
Show all info
Study aim
Biogenesis/cargo sorting/Identification of content (omics approaches)
Sample
Species
Streptomyces sp. Mg1
Sample Type
Cell culture supernatant
EV-producing cells
PSK0558
EV-harvesting Medium
Serum free medium
Separation Method
(Differential) (ultra)centrifugation
dUC: centrifugation steps
Between 10,000 g and 50,000 g
Equal to or above 150,000 g
Pelleting performed
Yes
Pelleting: rotor type
Type 45 Ti
Pelleting: speed (g)
235000
Density gradient
Type
Discontinuous
Number of initial discontinuous layers
6
Lowest density fraction
0%
Highest density fraction
50%
Total gradient volume, incl. sample (mL)
2.1
Sample volume (mL)
0.2
Orientation
Bottom-up
Speed (g)
120000
Duration (min)
1020
Fraction volume (mL)
0.2
Fraction processing
Centrifugation
Pelleting: volume per fraction
2.1
Pelleting: speed (g)
120000
Pelleting: adjusted k-factor
TDB
Filtration steps
0.22µm or 0.2µm
Characterization: Protein analysis
Protein Concentration Method
Not determined
Proteomics database
No
Characterization: Lipid analysis
No
Characterization: Particle analysis
None
EV230812 13/14 Streptomyces sp. Mg1 PSK0558 (d)(U)C
DG
Filtration
Hoefler BC 2017 57%

Study summary

Full title
All authors
Hoefler BC, Stubbendieck RM, Josyula NK, Moisan SM, Schulze EM, Straight PD
Journal
Cell Chem Biol
Abstract
Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and (show more...)Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and metal scavengers. Little is known about how specialized metabolites are processed and trafficked for their diverse competitive functions. Linearmycins A and B are linear polyketides with antifungal and antibacterial activity but are colony-localized in imaging mass spectrometry of Streptomyces sp. Mg1 (S. sp. Mg1). To decipher a connection between colony localization and antibiotic activity, we identified the linearmycin gene cluster and investigated linearmycin production and distribution by S. sp. Mg1. Our results uncover a large family of variant linearmycins with limited solubility in aqueous solution. We hypothesized that extracellular vesicles may traffic the lipid-like linearmycins. We found that vesicles isolated from culture supernatants contained linearmycins. Surprisingly, abolishing production of linearmycins in S. sp. Mg1 also diminished extracellular vesicle production. Our results reveal integration of linearmycin biosynthesis with production of extracellular vesicles, suggesting a deep connection between specialized metabolism and bacterial membrane physiology. (hide)
EV-METRIC
57% (92nd percentile of all experiments on the same sample type)
 Reported
 Not reported
 Not applicable
EV-enriched proteins
Protein analysis: analysis of three or more EV-enriched proteins
non EV-enriched protein
Protein analysis: assessment of a non-EV-enriched protein
qualitative and quantitative analysis
Particle analysis: implementation of both qualitative and quantitative methods. For the quantitative method, the reporting of measured EV concentration is expected.
electron microscopy images
Particle analysis: inclusion of a widefield and close-up electron microscopy image
density gradient
Separation method: density gradient, at least as validation of results attributed to EVs
EV density
Separation method: reporting of obtained EV density
ultracentrifugation specifics
Separation method: reporting of g-forces, duration and rotor type of ultracentrifugation steps
antibody specifics
Protein analysis: antibody clone/reference number and dilution
lysate preparation
Protein analysis: lysis buffer composition
Study data
Sample type
Cell culture supernatant
Sample origin
ΔlnyI 96h
Focus vesicles
extracellular vesicle
Separation protocol
Separation protocol
  • Gives a short, non-chronological overview of the
    different steps of the separation protocol.
    • dUC = (Differential) (ultra)centrifugation
    • DG = density gradient
    • UF = ultrafiltration
    • SEC = size-exclusion chromatography
    • IAF = immuno-affinity capture
(Differential) (ultra)centrifugation
Density gradient
Filtration
Protein markers
EV: None
non-EV: None
Proteomics
yes
EV density (g/ml)
not specified
Show all info
Study aim
Biogenesis/cargo sorting/Identification of content (omics approaches)
Sample
Species
Streptomyces sp. Mg1
Sample Type
Cell culture supernatant
EV-producing cells
PSK0558
EV-harvesting Medium
Serum free medium
Separation Method
(Differential) (ultra)centrifugation
dUC: centrifugation steps
Between 10,000 g and 50,000 g
Equal to or above 150,000 g
Pelleting performed
Yes
Pelleting: rotor type
Type 45 Ti
Pelleting: speed (g)
235000
Density gradient
Type
Discontinuous
Number of initial discontinuous layers
6
Lowest density fraction
0%
Highest density fraction
50%
Total gradient volume, incl. sample (mL)
2.1
Sample volume (mL)
0.2
Orientation
Bottom-up
Speed (g)
120000
Duration (min)
1020
Fraction volume (mL)
0.2
Fraction processing
Centrifugation
Pelleting: volume per fraction
2.1
Pelleting: speed (g)
120000
Pelleting: adjusted k-factor
TDB
Filtration steps
0.22µm or 0.2µm
Characterization: Protein analysis
Protein Concentration Method
Not determined
Proteomics database
No
Characterization: Lipid analysis
No
Characterization: Particle analysis
None
EV230812 14/14 Streptomyces aizunensis PDS0116 (d)(U)C
DG
Filtration
Hoefler BC 2017 57%

Study summary

Full title
All authors
Hoefler BC, Stubbendieck RM, Josyula NK, Moisan SM, Schulze EM, Straight PD
Journal
Cell Chem Biol
Abstract
Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and (show more...)Specialized metabolites support bacterial competitive fitness as antibiotics, signals, pigments, and metal scavengers. Little is known about how specialized metabolites are processed and trafficked for their diverse competitive functions. Linearmycins A and B are linear polyketides with antifungal and antibacterial activity but are colony-localized in imaging mass spectrometry of Streptomyces sp. Mg1 (S. sp. Mg1). To decipher a connection between colony localization and antibiotic activity, we identified the linearmycin gene cluster and investigated linearmycin production and distribution by S. sp. Mg1. Our results uncover a large family of variant linearmycins with limited solubility in aqueous solution. We hypothesized that extracellular vesicles may traffic the lipid-like linearmycins. We found that vesicles isolated from culture supernatants contained linearmycins. Surprisingly, abolishing production of linearmycins in S. sp. Mg1 also diminished extracellular vesicle production. Our results reveal integration of linearmycin biosynthesis with production of extracellular vesicles, suggesting a deep connection between specialized metabolism and bacterial membrane physiology. (hide)
EV-METRIC
57% (92nd percentile of all experiments on the same sample type)
 Reported
 Not reported
 Not applicable
EV-enriched proteins
Protein analysis: analysis of three or more EV-enriched proteins
non EV-enriched protein
Protein analysis: assessment of a non-EV-enriched protein
qualitative and quantitative analysis
Particle analysis: implementation of both qualitative and quantitative methods. For the quantitative method, the reporting of measured EV concentration is expected.
electron microscopy images
Particle analysis: inclusion of a widefield and close-up electron microscopy image
density gradient
Separation method: density gradient, at least as validation of results attributed to EVs
EV density
Separation method: reporting of obtained EV density
ultracentrifugation specifics
Separation method: reporting of g-forces, duration and rotor type of ultracentrifugation steps
antibody specifics
Protein analysis: antibody clone/reference number and dilution
lysate preparation
Protein analysis: lysis buffer composition
Study data
Sample type
Cell culture supernatant
Sample origin
Control condition
Focus vesicles
extracellular vesicle
Separation protocol
Separation protocol
  • Gives a short, non-chronological overview of the
    different steps of the separation protocol.
    • dUC = (Differential) (ultra)centrifugation
    • DG = density gradient
    • UF = ultrafiltration
    • SEC = size-exclusion chromatography
    • IAF = immuno-affinity capture
(Differential) (ultra)centrifugation
Density gradient
Filtration
Protein markers
EV: None
non-EV: None
Proteomics
yes
EV density (g/ml)
not specified
Show all info
Study aim
Biogenesis/cargo sorting/Identification of content (omics approaches)
Sample
Species
Streptomyces aizunensis
Sample Type
Cell culture supernatant
EV-producing cells
PDS0116
EV-harvesting Medium
Serum free medium
Separation Method
(Differential) (ultra)centrifugation
dUC: centrifugation steps
Between 10,000 g and 50,000 g
Equal to or above 150,000 g
Pelleting performed
Yes
Pelleting: rotor type
Type 45 Ti
Pelleting: speed (g)
235000
Density gradient
Type
Discontinuous
Number of initial discontinuous layers
8
Lowest density fraction
10%
Highest density fraction
50%
Total gradient volume, incl. sample (mL)
14
Sample volume (mL)
1
Orientation
Bottom-up
Speed (g)
100400
Duration (min)
960
Fraction volume (mL)
1
Fraction processing
Centrifugation
Pelleting: volume per fraction
4mL
Pelleting: speed (g)
120000
Pelleting: adjusted k-factor
1.857
Filtration steps
0.22µm or 0.2µm
Characterization: Protein analysis
Protein Concentration Method
Not determined
Proteomics database
No
Characterization: Lipid analysis
No
Characterization: Particle analysis
None
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EV-TRACK ID
EV230812
species
Streptomyces
sp.
Mg1
Streptomyces
sp.
Mg1
Streptomyces
sp.
Mg1
Streptomyces
sp.
Mg1
Streptomyces
sp.
Mg1
Streptomyces
sp.
Mg1
Streptomyces
sp.
Mg1
Streptomyces
sp.
Mg1
Streptomyces
sp.
Mg1
Streptomyces
sp.
Mg1
Streptomyces
sp.
Mg1
Streptomyces
sp.
Mg1
Streptomyces
sp.
Mg1
Streptomyces
aizunensis
sample type
Cell
culture
Cell
culture
Cell
culture
Cell
culture
Cell
culture
Cell
culture
Cell
culture
Cell
culture
Cell
culture
Cell
culture
Cell
culture
Cell
culture
Cell
culture
Cell
culture
cell type
PSK0558
PSK0558
PSK0558
PSK0558
PSK0558
PSK0558
PSK0558
PSK0558
PSK0558
PSK0558
PSK0558
PSK0558
PSK0558
PDS0116