Xaa-Xaa-Pro tripeptidyl-peptidase

Xaa-Xaa-Pro tripeptidyl-peptidase
Identifiers
EC number 3.4.14.12
Databases
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum

Xaa-Xaa-Pro tripeptidyl-peptidase (EC 3.4.14.12, prolyltripeptidyl amino peptidase, prolyl tripeptidyl peptidase, prolyltripeptidyl aminopeptidase, PTP-A, TPP) is an enzyme.[1][2] It catalyses the following chemical reaction

Hydrolysis of Xaa-Xaa-Pro!Yaa- releasing the N-terminal tripeptide of a peptide with Pro as the third residue (position P1) and where Yaa is not proline

This cell-surface-associated serine exopeptidase is found in the Gram-negative, anaerobic bacterium Porphyromonas gingivalis.

References

  1. Banbula, A.; Mak, P.; Bugno, M.; Silberring, J.; Dubin, A.; Nelson, D.; Travis, J.; Potempa, J. (1999). "Prolyl tripeptidyl peptidase from Porphyromonas gingivalis. A novel enzyme with possible pathological implications for the development of periodontitis". J. Biol. Chem. 274: 9246–9252. doi:10.1074/jbc.274.14.9246. PMID 10092598.
  2. Fujimura, S.; Ueda, O.; Shibata, Y.; Hirai, K. (2003). "Isolation and properties of a tripeptidyl peptidase from a periodontal pathogen Prevotella nigrescens". FEMS Microbiol. Lett. 219: 305–309. doi:10.1016/s0378-1097(03)00048-x. PMID 12620636.
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