Glycoside Hydrolase Family 44

Activities in Familyendoglucanase (EC 3.2.1.4); xyloglucanase (EC 3.2.1.151)
Mechanism Retaining
3D Structure Status( β / α ) 8 barrel
Catalytic Nucleophile/BaseGlu
Catalytic Proton DonorGlu
Noteformerly 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 resourcesCAZypedia;
Commercial Enzyme Provider(s)NZYTech; PROZOMIX;
Statistics GenBank accession (245); Uniprot accession (13); PDB accession (14); 3D entries (4); cryst (0)
Bacteria
Protein Name EC#ReferenceOrganismGenBank UniprotPDB/3D
 broad substrate-specificity xyloglucanase J / processive endoglucanase (CelJ;Cthe_0624) (Cel9D/Cel9J+Cel44A) 3.2.1.151 pubmed
Acetivibrio thermocellus ATCC 27405 ABN51859.1 A3DD30  
 endoglucanase J (CelJ) (Cel9D-Cel44A) 3.2.1.4 pubmed
pubmed
Acetivibrio thermocellus F1 BAA12070.1 A3DD30
P71140
2D8G[nd]
2E0P[A]
2E4T[A]
2EEX[A]
2EJ1[A]
2EO7[A]
2EQD[A]
 bifunctional mannanase / endoglucanase (CbMan5A/Cel44A;Athe_1859;Cbes_1859;ORF1946) (Man5A-Cel44A) 3.2.1.4 pubmed
Caldicellulosiruptor bescii DSM 6725 ACM60947.1 B9MKT9  
 bifunctional β-mannanase / endo-β-1,4-glucanase (ManA) 3.2.1.4 pubmed
Caldicellulosiruptor saccharolyticus AAA71887.1 P22533  
 endoglucanase/xylanase (EG;CAC0915) 3.2.1.4
3.2.1.8
pubmed
pubmed
Clostridium acetobutylicum ATCC 824 AAK78891.1
NP_347551.1
Q977Y3 3IK2[A]
 endo-β-1,4-glucanase A (CelA) 3.2.1.4 pubmed
Paenibacillus lautus PL236 AAA22303.1
CAA01933.1
P29719  
 xyloglucanase / β-mannanase (Cel44C-Man26A) 3.2.1.151
3.2.1.4
pubmed
pubmed
Paenibacillus polymyxa GS01 AAW12876.1
ABC88431.1
ACE10759.1
Q1A2D0 2YIH[A]
2YJQ[A,B]
2YKK[A]
3ZQ9[A]
 xyloglucanase (GH44A;RUM_05910) (Xeg44A) 3.2.1.151 pubmed
Ruminococcus champanellensis 18P13 = JCM 17042 CBL16808.1 D4LB13  
 cellulase (EndB) 3.2.1.4 pubmed
Ruminococcus flavefaciens 17 CAC83072.1 Q934F9  
 xyloglucanase / endo-β-1,4-glucanase B (CelB) 3.2.1.151
3.2.1.4
pubmed
pubmed
Ruminococcus flavefaciens FD-1 AAA95959.1 Q52743  
 bifunctional glucanase-xylanase (CelM2) 3.2.1.- pubmed
uncultured bacterium ABL11223.1 A1E9A6 3FW6[A]
3II1[A]
 cellulase (Lc-CelH) 3.2.1.4 pubmed
uncultured bacterium AHL27901.1 W8PBJ3  
unclassified
Protein Name EC#ReferenceOrganismGenBank UniprotPDB/3D
 endoglucanase (MgCel44) (Cel44) 3.2.1.4 pubmed
uncultured microorganism AGZ87466.1 U5YC86  
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