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Using the Overlay Assay to Qualitatively Measure Bacterial Production of and Sensitivity to Pneumococcal Bacteriocins
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Immunologie und Infektion
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JoVE Journal Immunologie und Infektion
Using the Overlay Assay to Qualitatively Measure Bacterial Production of and Sensitivity to Pneumococcal Bacteriocins

Using the Overlay Assay to Qualitatively Measure Bacterial Production of and Sensitivity to Pneumococcal Bacteriocins

13,222 Views

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06:05 min

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September 30, 2014

DOI:

10.3791/51876-v

DOI:
10.3791/51876-v

•

06:05 min
September 30, 2014

•

4 Views
,
1Microbiology and Immunology,University of Michigan, 2Pediatrics and Communicable Diseases,University of Michigan

Summary

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Competition in Streptococcus pneumoniae is mediated by bacteriocins, small antimicrobial peptides with inhibitory activity towards pneumococcus and other related species.  Here we describe an optimized bacterial overlay assay that allows for the characterization of bacteriocin activity and inhibitory spectrum, bacteriocin-specific immunity, and detection of secreted quorum sensing peptides.

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Overlay AssayBacterial ProductionPneumococcal BacteriocinsStreptococcus PneumoniaeBacteriocin-like Peptide (blp) LocusBacteriocin Immunity Region (BIR)Bacteriocin-mediated CompetitionQuorum Sensing PeptidesLacZ-reporter Strains

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Cite this Article

Maricic, N., Dawid, S. Using the Overlay Assay to Qualitatively Measure Bacterial Production of and Sensitivity to Pneumococcal Bacteriocins. J. Vis. Exp. (91), e51876, doi:10.3791/51876 (2014).

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