The FCT and equivalent region genes of Streptococcus pyogenes and other related bacteria encode surface proteins that include fibronectin- and collagen-binding proteins and the serological markers known as T antigens. Some of these proteins give rise ...
The FCT and equivalent region genes of Streptococcus pyogenes and other related bacteria encode surface proteins that include fibronectin- and collagen-binding proteins and the serological markers known as T antigens. Some of these proteins give rise to pilus-like appendages [1]. The FctA family is found in many Firmicutes and related bacteria. In S. pyogenes, the pili have a role in bacterial adherence and colonisation of human tissues [2]. Members of this family have a conserved N-terminal lysine and C-terminal asparagine that can form a covalent isopeptide bond [3].
This domain is found as tandem repeats in bacterial cell surface proteins, associated with TED adhesive domains. This domain contains a conserved lysine, glutamic acid and asparagine diagnostic of an intradomain isopeptide bond.
