Known Activities	Modules of approx. 120 residues. The cellulose-binding function has been demonstrated in one case on amorphous cellulose and β-1,4-xylan. Some of these modules also bind β-1,3-glucan, β-1,3-1,4-glucan, and β-1,4-glucan.
3D Structure Status	β-sandwich
Note	Previously known as cellulose-binding domain family VI (CBD VI).
External resources	InterPro; PFAM; PROSITE;
Commercial Enzyme Provider(s)	NZYTech; PROZOMIX;
Statistics	GenBank accession (656); Uniprot accession (411); PDB accession (28); 3D entries (8); cryst (0)

Bacteria
Protein Name	EC#	Organism	GenBank	Uniprot	PDB/3D
BH0236		Bacillus halodurans C-125	BAB03955.1 NP_241102.1	Q9KG76	1W9S[A,B] 1W9T[A,B] 1W9W[A]
arabinoxylan α-L-arabinofuranohydrolase (XynD;BsAXH-m2,3;BSU18160)		Bacillus subtilis subsp. subtilis str. 168	CAA97613.1 CAB13699.1 NP_389698.1	Q45071	3C7E[A] 3C7F[A] 3C7G[A] 3C7H[A] 3C7O[A]
endo-β-1,4-glucanase B (CelB) (Cel5A;Cel5B)		Cellvibrio mixtus ATCC 12120	AAB61462.2	O07653	1UXZ[A,B] 1UY0[A,B] 1UYX[A,B] 1UYY[A,B] 1UYZ[A,B] 1UZ0[A]
galactosidase (Gal59A;Ccel_1238) (Gal59A)		Clostridium cellulolyticum H10 ATCC 35319	ABG76970.1 ACL75594.1	Q0PRN1	2V4V[A]
xylanase A (XynA) (Xyn11A)		Clostridium stercorarium NCIMB 11754	AAL14106.1 CAD48307.1	Q8GJ44 Q93AQ5	1UY1[A] 1UY2[A] 1UY3[A] 1UY4[A]
xylanase A (XynA) (Xyn11A)		Clostridium stercorarium NCIMB 11754	AAL14106.1 CAD48307.1	Q8GJ44 Q93AQ5	1NAE[A] 1O8P[A] 1O8S[A] 1OD3[A]
xylanase (M6;CtM6;Cthe_2193) (arabinoxylan-specific) (Xyl5A)		Clostridium thermocellum ATCC 27405	ABN53395.1	A3DHG6	2Y8K[A]
xylanase A or U / acetylxylan esterase (XynA;XynU;LX4) (Xyn11A)		Clostridium thermocellum F1 / YS	AAC04579.1 BAA33543.1	O52780 O87119	1GMM[A] 1UXX[X]
endo-β-agarase I / B (AgaB;Sde_1175) (Aga16B)		Saccharophagus degradans 2-40	AAT67062.1 ABD80437.1	Q21LJ2	2CDO[A,B,C,D] 2CDP[A,B,C,D]

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