Mechanism	Retaining e
3D Structure Status	( β / α ) 8 barrel
Catalytic Nucleophile/Base	Glu
Catalytic Proton Donor	Glu
Note	formerly known as cellulase family J. Note that the stereochemistry of the reaction has recently been corrected : Kitago et al., J. Biol. Chem. 282(2007)35703-11 (PMID: 17905739)
External resources	CAZypedia;
Commercial Enzyme Provider(s)	NZYTech; PROZOMIX;
Statistics	GenBank accession (436); Uniprot accession (14); PDB accession (14); 3D entries (4); cryst (0)

Bacteria
Protein Name	EC#	Organism	GenBank	Uniprot	PDB/3D Carbohydrate Ligands Resolution (Å)
endoglucanase J (CelJ) (Cel9D-Cel44A)	3.2.1.4	Acetivibrio thermocellus F1	BAA12070.1	A3DD30 P71140	2D8G[nd] 2E0P[A] β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Manp 1.60 2E4T[A] 0.96 2EEX[A] β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp 2.00 2EJ1[A] β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp 1.80 2EO7[A] β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Manp 1.75 2EQD[A] β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp 2.80
endoglucanase/xylanase (EG;CAC0915)	3.2.1.4 3.2.1.8	Clostridium acetobutylicum ATCC 824	AAK78891.1 NP_347551.1	Q977Y3	3IK2[A] 2.20
xyloglucanase / β-mannanase (Cel44C-Man26A)	3.2.1.4 3.2.1.151	Paenibacillus polymyxa GS01	AAW12876.1 ABC88431.1 ACE10759.1	Q1A2D0	2YIH[A] α-D-Xylp-(1-6)[β-D-Glcp-(1-4)]-β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp 1.70 2YJQ[A,B] β-D-Glcp-(1-4)-β-D-Glcp-(1-1)-<non_carb> <carb_like_OXZ> 2.25 2YKK[A] 1.79 3ZQ9[A] β-D-Glcp-(1-4)-<carb_like_NOY> <carb_like_NOY> 1.86
cellulose endo-β-1,4-glucosidase (CelM2)	3.2.1.4	uncultured bacterium	ABL11223.1	A1E9A6	3FW6[A] 2.30 3II1[A] β-D-Glcp 2.25
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