Mechanism	Retaining e
Clan	GH-K
3D Structure Status	( β / α ) 8 barrel
Catalytic Nucleophile/Base	carbonyl oxygen of C-2 acetamido group of substrate
Catalytic Proton Donor	Glu (experimental)
Note	Contains chitinases of classes III and V. Contains non-catalytic proteins such as xylanase inhibitor; concanavalin B; narbonin
External resources	CAZypedia; HOMSTRAD; PROSITE;
Commercial Enzyme Provider(s)	MEGAZYME; NZYTech; PROZOMIX;
Statistics	GenBank accession (48424); Uniprot accession (529); PDB accession (451); 3D entries (118); cryst (2)

Activity Id	EC#	Activity Name	Residue -2	Bond -1	Residue -1	Reacting Bond	Residue +1	Bond +1	Residue +2	Reactant
H10	3.2.1.14	chitin endo-b-1,4-N-acetylglucosaminidase	bDGlcpNAc	1,4	bDGlcpNAc	1,4	bDGlcpNAc	1,4	bDGlcpNAc	H2O
H38	3.2.1.52	b-N-acetylhexosaminidase			[bDGlcpNAc/bDGalpNAc	1,X	alcohol			H2O
H73	3.2.1.96	mannosyl-oligosaccharide endo-b-1,4-N-acetylglucosaminidase	bDManp	1,4	bDGlcpNAc	1,4	bDGlcpNAc	1,X	Asn	H2O
H106	3.2.1.132	chitosan endo-b-1,4-N-glucosaminase	bDGlcpN	1,4	bDGlcpN	1,4	bDGlcpN	1,4	bDGlcpN	H2O
H155	3.2.1.200	chitin exo-b-1,4-N-acetylglucobiosaminidase	[bDGlcpNAc	1,4	bDGlcpNAc	1,4	bDGlcpNAc	1,4	bDGlcpNAc	H2O
H156	3.2.1.201	reducing end chitin exo-b-1,4-N-acetylglucosaminidase	bDGlcpNAc	1,4	bDGlcpNAc	1,4	bDGlcpNAc	1,4	DGlcpNAc]	H2O
H175	3.2.1.-	mannosyl-oligosaccharide exo-b-1,4-N-acetylglucosaminidase			[bDGlcpNAc	1,4	bDGlcpNAc	1,X	Asn	H2O
H181	3.2.1.-	chitin exo-b-1,4-N-acetylglucosaminidase			[bDGlcpNAc	1,4	bDGlcpNAc	1,4	bDGlcpNAc	H2O
H183	3.2.1.-	peptidoglycan endo-b-1,4-N-acetylglucosaminidase	bDMurpNAc	1,4	bDGlcpNAc	1,4	bDMurpNAc	1,4	bDGlcpNAc	H2O
H205	3.2.1.-	Nod factor endo-b-1,4-N-acetylglucosaminidase	bDGlcpNAc	1,4	bDGlcpNAc	1,4	bDGlcpNAc	1,4	bDGlcpNAc_6S	H2O
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