. "\"Catalysis of the reaction: creatinine + H2O = N-methylhydantoin + NH3.\" [EC:3.5.4.21, MetaCyc:CREATININE-DEAMINASE-RXN]" . . "creatinine deaminase activity" . "creatinine desiminase activity" . "creatinine iminohydrolase activity" . "EC:3.5.4.21" . "MetaCyc:CREATININE-DEAMINASE-RXN" . "RHEA:12684" . . . "creatinine hydrolase" .