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)
Bacteria
Protein Name EC#OrganismGenBankUniprot
PDB/3D Carbohydrate Ligands Resolution (Å)
 scaffoldin A (ScaA;CipV)   Acetivibrio cellulolyticus AAF06064.1 Q9RPL0
3ZQW[A] 1.07
3ZU8[A] 1.80
3ZUC[A] 1.00
 endo-β-1,4-glucanase (EglS;BglC;Gld;BSU18130;BsCel5;BsCel5A) (Cel5A) 3.2.1.4 Bacillus subtilis subsp. subtilis str. 168 CAA82317.1
AEJ76923.1
AIY93123.1
AQR81804.1
AQR86018.1
CAA97610.1
CAB13696.2
NP_389695.1
P10475
2L8A[A] NMR
 endo-β-1,4-glucanase G (CelG;Ccel_0731) (Cel9G) 3.2.1.4 [Clostridium] cellulolyticum H10 ACL75110.1
AAA73868.1
P37700
1G87[A,B] 1.60
1GA2[A,B] β-D-Glcp-(1-4)-β-D-Glcp
β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp
1.70
1K72[A,B] α-D-Glcp
β-D-Glcp-(1-4)-α-D-Glcp
1.80
1KFG[A,B] β-D-Glcp4S-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp4S-(1-4)-β-D-Glcp1S
1.90
 scaffoldin (CipC;Ccel_0728)   [Clostridium] cellulolyticum H10 ACL75107.1
AAC28899.2
B8I7V0
Q45996
1G43[A] 2.20
 Clocl_4008 (Cbm3B)   [Clostridium] clariflavum DSM 19732 AEV70444.1  
4B96[A] 1.91
 scaffoldin (ScaA;Cipbc)   Pseudobacteroides cellulosolvens ATCC 35603 = DSM 2933 AAG01230.2 Q9FDJ9
2XBT[A] 1.83
 scaffoldin (CipA;Cthe_3077)   Ruminiclostridium thermocellum ATCC 27405 ABN54273.1 Q06851
1NBC[A,B] 1.75
4B9F[A,B] 1.19
 broad specificity plant-cell wall carbohydrate-sensor (RsgI1;Cthe_0059)   Ruminiclostridium thermocellum ATCC 27405 ABN51300.1
CCF82156.1
A3DBH1
4B9C[A] 1.17
 cellulose-specific sensor (RsgI2;Cthe_0267)   Ruminiclostridium thermocellum ATCC 27405 ABN51506.1 A3DC27
4B9P[A] 1.18
 weak xyloglucan-specific sensor (RsgI4;Cthe_0404)   Ruminiclostridium thermocellum ATCC 27405 ABN51642.1 A3DCG3
4B97[A] 1.28
 cellobiohydrolase (CbhA;Cthe_0413) (Cbh9A) 3.2.1.91 Ruminiclostridium thermocellum ATCC 27405 ABN51651.1 A3DCH2
4C8X[A,B,C,D] 2.00
 Cthe_2760 (CelV) (Cel9V)   Ruminiclostridium thermocellum ATCC 27405 ABN53959.1 A3DJ30
2WNX[A] 1.31
2WO4[A] 1.85
2WOB[A,C,E] 2.00
 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] 2.20
3ZQX[A] 1.04
 Cther_1784   Ruminiclostridium thermocellum JW20 EFB38780.1  
4B97[A] 1.28
 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] 1.68
 scaffoldin (CipA;YSBL_2973) (partial)   Ruminiclostridium thermocellum YS EIC03335.1  
4JO5[A] 1.98
 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] β-D-Glcp
β-D-Glcp-(1-4)-β-D-Glcp
β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp
2.00
1TF4[A,B] 1.90
3TF4[A,B] β-D-Glcp
β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp
2.20
4TF4[A,B] β-D-Glcp-(1-4)-β-D-Glcp
β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-β-D-Glcp-(1-4)-α-D-Glcp
2.00
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