2.7.1.147	ADP-specific glucose/glucosamine kinase	chitin degradation I (archaea)	-	-	
3.2.1.14	chitinase	chitin degradation I (archaea)	-	-	
3.2.1.200	exo-chitinase (non-reducing end)	chitin degradation I (archaea)	-	-	
3.5.1.33	N-acetylglucosamine deacetylase	chitin degradation I (archaea)	-	-	
3.5.1.136	N,N'-diacetylchitobiose non-reducing end deacetylase	chitin degradation I (archaea)	-	-	
3.5.99.6	glucosamine-6-phosphate deaminase	chitin degradation I (archaea)	-	-