Purification and partial amino acid sequence of Plantaricin S, a bacteriocin produced by Lactobacillus plantarum LPCO10, the activity of which depends on the complementary action of two peptides

Article Abstract:

Plantaricin S, a bacteriocin of Lactobacillus plantarum LPCO10, needs the complementary action of alpha and beta peptides for its proper activity, even though the beta peptide has a slight suppressive action. The bacteriocin on sequencing gives 26 and 24 amino acids residues corresponding to the alpha and beta peptides. The amino acid sequences of alpha and beta have no similarity to each other or to other bacteriocins from lactic acid bacteria.

Amino acid sequence, Amino acid sequencing, Lactobacillus plantarum

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Propionibacterium jensenii produces the polyene pigment granadaene and has hemolytic properties similar to those of Streptococcus agalactiae

Article Abstract:

Several studies are conducted to understand the purification and identification of the red polyene pigment granadaene from Propionibacterium jensenii. Propionibacterium jensenii is found to exhibit similar hemolytic properties as the Streptococcus agalactiae, also producing the same pigment.

Hemolysis and hemolysins, Hemolysis, Pigments, Acne, Report

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Identification of the propionicin F bacteriocin immunity gene (pcfI) and development of a food-grade cloning system for Propionibacterium freudenreichii

Article Abstract:

The application of bacteriocin immunity gene pcfI from Propionibacterium freudenreichii as an efficient selection marker for food-grade cloning is reported.

All Other Basic Organic Chemical Manufacturing, Industrial Organic Chemicals, Propionic Acid, Genetic aspects, Membrane proteins, Gram-positive bacteria, Chemical properties, Bacteriocins

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