1.5.8.3	sarcosine dehydrogenase	glycine betaine degradation II (mammalian)	
1.5.8.4	dimethylglycine dehydrogenase	glycine betaine degradation II (mammalian)	
2.1.1.5	betaine-homocysteine S-methyltransferase	glycine betaine degradation II (mammalian)	
2.1.2.1	glycine hydroxymethyltransferase	glycine betaine degradation II (mammalian)