cathepsin X EC#: 3.4.18.1; ChemWhat Code: 1380417
| Product Name | cathepsin X |
| Example Structure |  |
| Synonyms | acid carboxypeptidase, cathepsin B2, cathepsin IV, cathepsin P, cathepsin X, cathepsin Z, CATX, CTPZ, CTSX, CTSZ, cysteine-type carboxypeptidase, lysosomal carboxypeptidase B, mopre, PoCtX |
| EC Number | 3.4.18.1 |
| CAS Registry Number | 37217-21-3 |
| Comments | Cathepsin X is a lysosomal cysteine peptidase of family?C1?(papain family). The pH optimum is dependent on the substrate and is 5.0 for the carboxypeptidase activity. Unstable above pH 7.0. Compound E-64, leupeptin and antipain are inhibitors, but not cystatin C. Cathepsin X is ubiquitously distributed in mammalian tissues. The propeptide is extremely short (38 amino acid residues) and the proenzyme is catalytically active. Human gene locus: 20q13. |
| Cofactor | |
| History | |
| Reactions | Release of C-terminal amino acid residues with broad specificity, but lacks action on C-terminal proline. Shows weak endopeptidase activity. |
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