Xaa-Pro dipeptidyl-peptidase

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Xaa-Pro dipeptidyl-peptidase
Identifiers
EC no. 3.4.14.11
CAS no. 54249-88-6
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Xaa-Pro dipeptidyl-peptidase (EC 3.4.14.11, X-prolyl dipeptidyl aminopeptidase, PepX, X-prolyl dipeptidyl peptidase is an enzyme. [1] [2] [3] [4] [5] It catalyses the following chemical reaction

Hydrolyses Xaa-Pro bonds to release unblocked, N-terminal dipeptides from substrates including Ala-Pro-p-nitroanilide and (sequentially) Tyr-Pro--Phe-Pro--Gly-Pro--Ile

The intracellular enzyme from Lactococcus lactis (190-kDa) is the type example of peptidase family S15.

References

  1. ↑ Zevaco C, Monnet V, Gripon JC (1990). "Intracellular X-prolyl dipeptidyl peptidase from Lactococcus lactis spp. lactis: purification and properties". Journal of Applied Bacteriology. 68 (4): 357–366. doi:10.1111/j.1365-2672.1990.tb02886.x.
  2. ↑ Meyer-Barton EC, Klein JR, Imam M, Plapp R (October 1993). "Cloning and sequence analysis of the X-prolyl-dipeptidyl-aminopeptidase gene (pepX) from Lactobacillus delbrückii ssp. lactis DSM7290". Applied Microbiology and Biotechnology. 40 (1): 82–9. doi:10.1007/bf00170433. PMID   7765315.
  3. ↑ Habibi-Najafi MB, Lee BH (1994). "Purification and characterization of X-prolyl dipeptidyl peptidase from Lactobacillus casei subsp. casei LLG". Appl. Microbiol. Biotechnol. 42 (2–3): 280–286. doi:10.1007/BF00902729. PMID   7765768.
  4. ↑ Chich JF, Gripon JC, Ribadeau-Dumas B (January 1995). "Preparation of bacterial X-prolyl dipeptidyl aminopeptidase and its stabilization by organic cosolvents". Analytical Biochemistry. 224 (1): 245–9. doi:10.1006/abio.1995.1036. PMID   7710078.
  5. ↑ Chich JF, Chapot-Chartier MP, Ribadeau-Dumas B, Gripon JC (December 1992). "Identification of the active site serine of the X-prolyl dipeptidyl aminopeptidase from Lactococcus lactis". FEBS Letters. 314 (2): 139–42. doi: 10.1016/0014-5793(92)80960-o . PMID   1459244.
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