Carbohydrate-Binding Module Family 3

Activities in FamilyModules of approx. 150 residues found in bacterial enzymes. The cellulose-binding function has been demonstrated in many cases. In one instance binding to chitin has been reported.
3D Structure Statusβ-sandwich
NotePreviously known as cellulose-binding domain family III (CBD III).
External resourcesHOMSTRAD; PROSITE;
Commercial Enzyme Provider(s)NZYTech; PROZOMIX;
Statistics GenBank accession (1093); Uniprot accession (275); PDB accession (33); 3D entries (18); cryst (0)
All (1141) Archaea (2) Bacteria (1136) Eukaryota (2) unclassified (1) Structure (18) Characterized (133)
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Bacteria
Protein Name EC#OrganismGenBank UniprotPDB/3D
 endo-β-1,4-glucanase V1 3.2.1.4 Pectobacterium carotovorum SCC3193 CAA55823.1 Q59395  
 endo-β-1,4-glucanase V 3.2.1.4 Pectobacterium carotovorum SCRI193 CAA53592.1 Q47096  
 endo-β-1,4-glucanase (CelA) 3.2.1.4 Pectobacterium carotovorum subsp. carotovorum LY34 AAC02964.2
AAC02964.1
O31029  
 endo-β-1,4-glucanase I (CelI;Cthe_0040) (Cel9I) 3.2.1.4 Ruminiclostridium thermocellum ATCC 27405 ABN51281.1 Q02934  
 endo-β-1,4-glucanase I (CelI;Cthe_0040) (Cel9I) 3.2.1.4 Ruminiclostridium thermocellum ATCC 27405 ABN51281.1 Q02934  
 endo-β-1,4-glucanase Y (CelY;Cthe_0071) (Cel48B=Cel48Y) 3.2.1.4 Ruminiclostridium thermocellum ATCC 27405 ABN51312.1 A3DBI3  
 cellobiohydrolase (CbhA;Cthe_0413) (Cbh9A) 3.2.1.91 Ruminiclostridium thermocellum ATCC 27405 ABN51651.1 A3DCH2 4C8X[A,B,C,D]
 endo-β-1,4-glucanase F (CelF;Cthe_0543) (Cel9B) 3.2.1.4 Ruminiclostridium thermocellum ATCC 27405 ABN51779.1 P26224  
 endo-β-1,4-glucanase R / cellotetraohydrolase (CelR;Cthe_0578) (Cel9R) 3.2.1.4 Ruminiclostridium thermocellum ATCC 27405 ABN51814.1 A3DCY5  
 endo-β-1,4-glucanase Q (CelQ;Cthe_0625) (Cel9I) 3.2.1.4 Ruminiclostridium thermocellum ATCC 27405 ABN51860.1
ARU79883.1
A3DD31  
 endoglucanase Q (CelQ) (Cel9I) 3.2.1.4 Ruminiclostridium thermocellum F1 BAB33148.1 Q9AJF8 5GXX[A,B]
5GXY[A,B]
5GXZ[A,B]
5GY0[A,B]
5GY1[A,B]
 cellobiohydrolase A (CbhA) (Cbh9A) 3.2.1.91 Ruminiclostridium thermocellum F7 CAA56918.2
CAA56918.1
Q59325 2YLK[A,B,C,D]
3ZQX[A]
 cellotetraose-producing endo-β-1,4-glucanase (CelR) (Cel9R) 3.2.1.4 Ruminiclostridium thermocellum F7 CAE51308.1 Q70DK3  
 cellobiohydrolase (CelO) (Cel5F) 3.2.1.91 Ruminiclostridium thermocellum F7 CAB76938.1 Q9L3J2  
 endo-β-1,4-glucanase N (CelN) (Cel9N) 3.2.1.4 Ruminiclostridium thermocellum F7 CAB76935.1 Q9L3J5  
 endo-β-1,4-glucanase F (CelF) (Cel9B) 3.2.1.4 Ruminiclostridium thermocellum NCIB 10682 CAA43035.1 P26224  
 endo-β-1,4-glucanase I (CelI;CMC) (Cel9C=Cel9I) 3.2.1.4 Ruminiclostridium thermocellum NCIB10682 / F7 AAA20892.1
CAB76932.1
Q02934
Q9L3J8
 
 endo-β-1,4-glucanase I (CelI;CMC) (Cel9C=Cel9I) 3.2.1.4 Ruminiclostridium thermocellum NCIB10682 / F7 AAA20892.1
CAB76932.1
Q02934
Q9L3J8
2XFG[B]
 endo-β-1,4-glucanase (GH9A;RUM_01230) (Cel9A) 3.2.1.4 Ruminococcus champanellensis 18P13 = JCM 17042 CBL16391.1 D4L9U6  
 endo-β-1,4-glucanase (GH9C;RUM_08690) (Cel9C) 3.2.1.4 Ruminococcus champanellensis 18P13 = JCM 17042 CBL17047.1 D4LBQ2  
 endo-β-1,4-glucanase (GH9E;RUM_15950) (Cel9E) 3.2.1.4 Ruminococcus champanellensis 18P13 = JCM 17042 CBL17683.1 D4LDI8  
 endo-β-1,4-glucanase (GH9G;RUM_24010) (Cel9G) 3.2.1.4 Ruminococcus champanellensis 18P13 = JCM 17042 CBL18389.1 D4LFJ4  
 STHERM_c20630 3.2.1.4 Spirochaeta thermophila DSM 6192 ADN02997.1 E0RQU1  
 STHERM_c20640 3.2.1.4 Spirochaeta thermophila DSM 6192 ADN02998.1 E0RQU2  
 endoglucanase (EGtf2) (Cel5B) 3.2.1.4 Thermobifida fusca TM51 AAP56348.1 Q7X2N2  
 endoglucanase 5B (Tfu_2712) (Cel5B) 3.2.1.4 Thermobifida fusca YX AAZ56745.1 Q47LC7  
 endo/exo-β-1,4-glucanase 9A (E4;CelD;TfCel9A;Tfu_2176) (processive) (Cel9A) 3.2.1.4 Thermobifida fusca YX AAB42155.1
AAZ56209.1
P26221
Q47MW0
1JS4[A,B]
1TF4[A,B]
3TF4[A,B]
4TF4[A,B]
 endo-β-1,4-glucanase (ThCel9A) (Cel9A) 3.2.1.4 Thermobifida halotolerans YIM 90462 AEH04391.1    
 endo-β-1,4-glucanase (CelWS3) 3.2.1.4 uncultured bacterium AFX88673.1    
 endo-β-1,4-glucanase (CelWS14) 3.2.1.4 uncultured bacterium AFX88668.1    
 endo-β-1,4-glucanase (CelWS6) 3.2.1.4 uncultured bacterium AFX88666.1    
 endo-β-1,4-glucanase (CelWS30) (fragment) 3.2.1.4 uncultured bacterium AFX88671.1    
 cellulase (Lc-CelF) 3.2.1.4 uncultured bacterium AHL27899.1    
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