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Updated: Aug 12, 2026

Using the Overlay Assay to Qualitatively Measure Bacterial Production of and Sensitivity to Pneumococcal Bacteriocins
Published on: September 30, 2014
Note: purification and characterization of the bacteriocin PsVP-10 produced by Pseudomonas sp
Abstract:
A bacteriocin (bacteriocin PsVP-10) produced by Pseudomonas sp. R-10 was purified by a simple method that included an extraction of the bacteriocin with chloroform, followed by cation exchange chromatography. The purity of the bacteriocin was verified by RP-HPLC. It is a peptide of 2.4 kDa, very stable to heat, to proteolytic enzymes and to pH. It presents a very broad spectrum of antimicrobial activity against Gram-positive and Gram-negative bacteria.
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