Activities in Family	Modules of approx. 150 residues found in bacterial enzymes. Binding of these modules has been demonstrated with xylan, β-1,3-glucan, β-1,3-1,4-glucan, β-1,6-glucan and amorphous cellulose but not with crystalline cellulose.
3D Structure Status	β-sandwich
Note	Previously known as cellulose-binding domain family IV (CBD IV).
External resources	CAZypedia; HOMSTRAD;
Statistics	GenBank accession (1463); Uniprot accession (41); PDB accession (19); 3D entries (11); cryst (4)

Bacteria
Protein Name	EC#	Organism	GenBank	Uniprot	PDB/3D Carbohydrate Ligands Resolution (Å)
cellobiohydrolase (CbhA;Cthe_0413) (Cbh9A)		Acetivibrio thermocellus ATCC 27405	ABN51651.1	A3DCH2 Q59325	3K4Z[A] β-D-Glcp-(1-4)-β-D-Glcp <carb_like_XGP> 2.11
lichenase A / laminarinase (LicA) (Lic16A)		Acetivibrio thermocellus DSM 1237	CAA61884.2	Q59328	cryst
lichenase A / laminarinase (LicA) (Lic16A)		Acetivibrio thermocellus DSM 1237	CAA61884.2	Q59328	cryst
lichenase A / laminarinase (LicA) (Lic16A)		Acetivibrio thermocellus DSM 1237	CAA61884.2	Q59328	cryst
lichenase A / laminarinase (LicA) (Lic16A)		Acetivibrio thermocellus DSM 1237	CAA61884.2	Q59328	cryst
cellobiohydrolase K (CelK) (Cel9K)		Acetivibrio thermocellus JW 20 / F7	AAC06139.1	O68438 P0C2S1	3P6B[A,B] 2.00
endo-β-1,4-glucanase C (CenC) (Cel9B)		Cellulomonas fimi ATCC 484	CAA40993.1 AAA23087.1 AAA23088.1 AEE45671.1	P14090	1GU3[A] β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp 2.3 1ULO[A] NMR 1ULP[A] NMR
endo-β-1,4-glucanase C (CenC) (Cel9B)		Cellulomonas fimi ATCC 484	CAA40993.1 AAA23088.1 AEE45671.1	P14090	1CX1[A] NMR
xylanase (Xynl;Xyn1;RmXyn10A;Rmar_1069) (Xyn10A)		Rhodothermus marinus DSM 4252	CAA72323.2 AAR06926.1 AAT06999.1 AAT07000.1 AAT07001.1 AAT07002.1 AAT07003.1 AAT07004.1 AAT07005.1 AAT07006.1 AAT07007.1 AAT07008.1 AAT07009.1 AAT07010.1 AAT07011.1 AAT07012.1 AAT07013.1 AAT07014.1 AAT07015.1 AAT07016.1 AAT07017.1 AAT07018.1 AAT07019.1 AAT07020.1 AAT07021.1 AAT07022.1 AAT07023.1 AAT07024.1 AAT07025.1 AAT07026.1 AAT07027.1 AAT07028.1 AAT07029.1 AAT07030.1 AAT07031.1 ACY47961.1	D0MHK3 Q7WTN6	1K42[A] NMR 1K45[A] NMR 2Y64[A] β-D-Xylp-(1-4)-β-D-Xylp-(1-4)-β-D-Xylp-(1-4)-β-D-Xylp-(1-4)-β-D-Xylp 1.40 2Y6G[A] β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp 1.30 2Y6H[A] 1.08 2Y6J[A] 1.70 2Y6K[A] β-D-Xylp-(1-4)-β-D-Xylp-(1-4)-β-D-Xylp-(1-4)-β-D-Xylp 1.36 2Y6L[A] β-D-Xylp-(1-4)-β-D-Xylp-(1-4)-β-D-Xylp-(1-4)-β-D-Xylp-(1-4)-β-D-Xylp 1.28 3JXS[A,B,C] 1.60 4BJ0[A] α-D-Xylp-(1-6)-β-D-Glcp-(1-4)[α-D-Xylp-(1-6)]-β-D-Glcp-(1-4)[α-D-Xylp-(1-6)]-β-D-Glcp-(1-4)-β-D-Glcp 1.00 5DPN[A] α-D-Xylp-(1-6)-β-D-Glcp-(1-4)[α-D-Xylp-(1-6)]-β-D-Glcp-(1-4)[α-D-Xylp-(1-6)]-β-D-Glcp-(1-4)-β-D-Glcp 1.60
xylanase C (XynC;PbXyn10C) (Xyn10C)		Segatella bryantii B14	CAB01855.1	D8DVU6 P72234	4MGQ[A] 1.68
laminarinase (Lam; TmLam; TM0024) (Lam16)		Thermotoga maritima MSB8	AAD35118.1 AGL48947.1 AHD18205.1 AKE27833.1 NP_227840.1	Q9WXN1 R4NXC3	1GUI[A] β-D-Glcp-(1-3)-β-D-Glcp-(1-3)-β-D-Glcp-(1-3)-β-D-Glcp-(1-3)-β-D-Glcp-(1-3)-β-D-Glcp 1.9
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