ACT_SITE 62; /note="Nucleophile"; /evidence="ECO:0000250"; ACT_SITE 65; /note="Nucleophile"; /evidence="ECO:0000250"; ACT_SITE 197; /note="Nucleophile"; /evidence="ECO:0000250"; ACT_SITE 200; /note="Nucleophile"; /evidence="ECO:0000250"