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type 2 lantibiotic, SP_1948 family This model recognizes a number of type 2 lantibiotic-type bacteriocins, related to but distinct from the family that includes lichenicidin and mersacidin. Sequence similarity among members consists largely of a 20-residue block of conserved sequence that covers most of the leader peptide region, absent from the mature lantibiotic. This is followed by a region with characteristic composition for lantibiotic precursor regions, rich in Ser and Thr and including a near-invariant Cys near or at the C-terminus, involved in cyclization. Members of this family typically are shorter than 70 amino acids. [Cellular processes, Toxin production and resistance] |
Jiyao W et al.(2023). "The conserved domain database in 2023.",