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Bacteriocin class IIc cyclic gassericin A-like This class of bacteriocins was previously described as class V. The members include gassericin A, acidocin B and butyrovibriocin AR10, all of which are hydrophobic cyclical structures. The N- and C-termini are covalently linked, and the circular molecule is resistant to several proteases and peptidases. The immunity protein that protects Lactobacillus gasseri from the toxic effects of its bacteriocin, gassericin A, has been identified. It is found to be a small positively-charged hydrophobic peptide of 53 amino acids containing a putative transmembrane segment - a structure unlike that of the more common immunity proteins as found in pfam08951. |
Jiyao W et al.(2023). "The conserved domain database in 2023.",