Karboksipeptidaza B (EC 3.4.17.2, protaminaza, pankreasna karboksipeptidaza B, tkivna karboksipeptidaza B, peptidil-L-lizin (L-arginin) hidrolaza) je enzim.[1][2][3][4] Ovaj enzim katalizuje sledeću hemijsku reakciju
- Preferentno odvajanje C-terminalne aminokiseline lizina ili arginina.
Ovaj cinkov enzim se formira iz prokarboksipeptidaze B.
- ↑ Folk, J.E. (1970). „Carboxypeptidase B (porcine pancreas)”. Methods Enzymol. 19: 504-508.
- ↑ Brodrick, J.W., Geokas, M.C. and Largman, C. (1976). „Human carboxypeptidase B. II. Purification of the enzyme from pancreatic tissue and comparison with the enzymes present in pancreatic secretion”. Biochim. Biophys. Acta 452: 468-481. PMID 1009123.
- ↑ Butterworth, J. and Duncan, J.J. (1979). „Carboxypeptidase B activity of cultured skin fibroblasts and relationship to cystic fibrosis”. Clin. Chim. Acta 97: 39-43. PMID 40714.
- ↑ Wallace, E.F., Evans, C.J., Jurik, S.M., Mefford, I.N. and Barchas, J.D. (1982). „Carboxypeptidase B activity from adrenal medulla. Is it involved in the processing of proenkephalin?”. Life Sci. 31: 1793-1796. PMID 6130442.