Assertion: active site cysteine | /r/HasProperty | replaced by serine
Facets:
Source sentences:
text: All but one of the EnCLs characterised in this study possess a typical catalytic triad of cysteine peptidase active site (Cys/His/Asn); the exception is EnCL2, in which the active site cysteine (Cys25) is replaced by serine (Ser25).