1.5.3.1	sarcosine oxidase (formaldehyde-forming)	creatinine degradation I	-	
1.5.8.3	sarcosine dehydrogenase	creatinine degradation I	-	
3.5.2.10	creatininase	creatinine degradation I	-	
3.5.3.3	creatinase	creatinine degradation I	-