Glycoside Hydrolase Family 51

Activities in Familyendoglucanase (EC 3.2.1.4); endo-β-1,4-xylanase (EC 3.2.1.8); β-xylosidase (EC 3.2.1.37); α-L-arabinofuranosidase (EC 3.2.1.55); lichenase / endo-β-1,3-1,4-glucanase (EC 3.2.1.73)
Mechanism Retaining
ClanGH-A
3D Structure Status( β / α ) 8 barrel
Catalytic Nucleophile/BaseGlu (experimental)
Catalytic Proton DonorGlu (experimental)
External resourcesCAZypedia;
Commercial Enzyme Provider(s)MEGAZYME; NZYTech; PROZOMIX;
Statistics GenBank accession (5270); Uniprot accession (462); PDB accession (34); 3D entries (8); cryst (0)
All (5106) Archaea (38) Bacteria (4734) Eukaryota (293) Viruses (21) unclassified (20) Structure (8) Characterized (82)
Bacteria
Protein Name EC#OrganismGenBankUniprot
PDB/3D Carbohydrate Ligands Resolution (Å)
 α-L-arabinofuranosidase (AbfB) 3.2.1.55 Bifidobacterium longum B667 AAO84266.1 Q841V6
2Y2W[A,B,C,D,E,F] 1.98
 α-L-arabinofuranosidase (AbfA;HUS_CDS35) 3.2.1.55 Geobacillus stearothermophilus T-6 NCIMB 40222 AAD45520.2
AAB33652.1
ACE73682.1
B3EYN4
Q9XBQ3
1PZ2[A,B] β-L-Araf-(1-4)-GLU
1.85
1PZ3[A,B] 1.70
1QW8[A,B] α-L-Araf-(1-3)-β-D-Xylp
2.70
1QW9[A,B] α-L-Araf-(1-1)-<non_carb>
2.00
6SXU[AAA]
6SXV[A,B] 1.68
 α-L-arabinofuranosidase 51A (Araf51;CtAraf51A;Cthe_2548) (Araf51A) 3.2.1.55 Hungateiclostridium thermocellum ATCC 27405 ABN53749.1
ZP_00503782.1
A3DIH0
2C7F[A,B,C,D,E,F] α-L-Araf-(1-5)-α-L-Araf
α-L-Araf-(1-5)-α-L-Araf-(1-1)-<non_carb>
α-L-Araf-(1-5)-α-L-Araf-(1-5)-α-L-Araf
1.04
2C8N[A,B,C,D,E,F] α-L-Araf-(1-1)-<non_carb>
1.90
5O7Z[A,B,C,D,E,F] 2.12
5O80[A,B,C,D,E,F] α-L-Araf
1.14
5O81[A,B,C,D,E,F] 1.90
5O82[A,B,C,D,E,F] α-L-Araf
1.90
 α-L-arabinofuranosidase (AbjA;AbfD3;G51;TxAbf) 3.2.1.55 Thermobacillus xylanilyticus D3 CAA76421.2 O69262
2VRK[A,B,C] 2.20
2VRQ[A,B,C] α-L-Araf-(1-3)-β-D-Xylp-(1-4)-β-D-Xylp
β-D-Xylp-(1-4)[α-L-Araf-(1-3)]-β-D-Xylp-(1-4)-β-D-Xylp
2.80
6ZT6[A,B,C] 1.20
6ZT7[A,B,C] α-L-Araf
1.50
6ZT8[A,B,C] 1.28
6ZT9[A,B,C] α-L-Araf
1.40
6ZTA[A,B,C] 2.20
 α-L-arabinofuranosidase (AraA;TmAFase;TmAbf;Tm-AFase;TM0281) 3.2.1.55 Thermotoga maritima MSB8 AAD35369.1
AGL49205.1
AHD17955.1
AKE28083.1
BAE02565.1
NP_228093.1
Q9WYB7
3UG3[A,B,C,D,E,F] 1.91
3UG4[A,B,C,D,E,F] α-L-Araf
3.80
3UG5[A,B,C,D,E,F] β-D-Xylp
2.00
4ATW[A,B,C,D,E,F] 2.35
 α-L-arabinofuranosidase (AraF;Tpet_0631) 3.2.1.55 Thermotoga petrophila RKU-1 ABQ46651.1 A5IKC8
3S2C[A,B,C,D,E,F,G,H,I,J, 1.87
 XAC1286 3.2.1.55 Xanthomonas citri pv. citri str. 306 AAM36157.1
NP_641621.1
Q8PMY9
6D25[A,B,C,D,E,F] 2.00
Eukaryota
Protein Name EC#OrganismGenBankUniprot
PDB/3D Carbohydrate Ligands Resolution (Å)
 α-L-arabinofuranosidase (Abf III;AXH-m) 3.2.1.55 Meripilus giganteus CBS 521.91 CAL81200.1  
6ZPS[AAA]
6ZPV[AAA]
6ZPW[AAA]
6ZPX[AAA]
6ZPY[AAA]
6ZPZ[AAA]
6ZQ0[AAA]
6ZQ1[AAA]
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