Cathepsin X (, cathepsin B2, cysteine-type carboxypeptidase, cathepsin IV, cathepsin Z, acid carboxypeptidase, lysosomal carboxypeptidase B) is an enzyme. This enzyme catalyses the following chemical reaction
Release of C-terminal amino acid residues with broad specificity, but lacks action on C-terminal proline. Shows weak endopeptidase activity
Cathepsin X is a cysteine cathepsin, a lysosomal cysteine peptidase of family C1 (papain family).
See also Cathepsin Z
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