Putative DD-carboxypeptidase TP_0574

UniProtKB accession:  P29723

Grouped By:  Matching UniProtKB accession

UniProtKB description:  A possible D,D-carboxypeptidase, that releases amino acids sequentially from a proteins C-terminus (PubMed:7972112, PubMed:12196546). Has zinc-dependent carboxypeptidase activity on synthetic depsipeptide substrates (PubMed:7972112). May serve to decrease cross-linking of peptidoglycan, promoting the highly sinusous motility of this spirochaete (Probable). Overexpression of the whole protein in E.coli leads to aberrant cell morphology and extrusion of the cytoplasm, while overexpression of a construct with the first 62 resides of the protein fused to PhoA does have this effect, suggesting the whole protein, not the lipoprotein moiety, is toxic (PubMed:7972112). Binds penicillin (PubMed:2647634, PubMed:7972112). Penicillin binding is covalent, does not require lipidation, and is zinc-dependent (PubMed:7972112, PubMed:12196546). While this protein has beta-lactamase activity in vitro, that is probably not its role in vivo, as T.pallidum is very sensitive to penicillin antibiotics (PubMed:12196546).