2.7.1.144	tagatose-6-phosphate kinase	N-acetyl-D-galactosamine degradation	
3.5.1.25	N-acetylglucosamine-6-phosphate deacetylase	N-acetyl-D-galactosamine degradation	
4.1.2.40	tagatose-bisphosphate aldolase	N-acetyl-D-galactosamine degradation