Genome level analysis of bacteriocins of lactic acid bacteria

Computational Biology and Chemistry
Neetigyata Pratap SinghReema Gabrani

Abstract

Bacteriocins are antimicrobial peptides which are ribosomally synthesized by mainly all bacterial species. LABs (lactic acid bacteria) are a diverse group of bacteria that include around 20 genera of various species. Though LABs have a tremendous potential for production of anti-microbial peptides, this group of bacteria is still underexplored for bacteriocins. To study the diversity among bacteriocin encoding clusters and the putative bacteriocin precursors, genome mining was performed on 20 different species of LAB not reported to be bacteriocin producers. The phylogenetic tree of gyrB, rpoB, and 16S rRNA were constructed using MEGA6 software to analyze the diversity among strains. Putative bacteriocins operons identified were found to be diverse and were further characterized on the basis of physiochemical properties and the secondary structure. The presence of at least two cysteine residues in most of the observed putative bacteriocins leads to disulphide bond formation and provide stability. Our data suggests that LABs are prolific source of low molecular weight non modified peptides.

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Citations

Nov 9, 2016·Beneficial Microbes·A ZanfardinoM Varcamonti
Jul 2, 2017·Applied and Environmental Microbiology·Domonique A CarsonJeroen De Buck
Mar 4, 2020·Journal of Medical Microbiology·Abdu AldarhamiMathew Upton
Feb 13, 2020·Frontiers in Microbiology·Shane Thomas O'DonnellCatherine Stanton
Sep 4, 2021·Journal of Agricultural and Food Chemistry·Yushan BuHuaxi Yi

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