2.4.1.320	1,4-beta-mannosyl-N-acetylglucosamine phosphorylase	beta-1,4-D-mannosyl-N-acetyl-D-glucosamine degradation	
5.3.1.8	mannose-6-phosphate isomerase	beta-1,4-D-mannosyl-N-acetyl-D-glucosamine degradation	
5.4.2.8	phosphomannomutase	beta-1,4-D-mannosyl-N-acetyl-D-glucosamine degradation