Glycoside Hydrolase Family 57

Activities in Familyα-amylase (EC 3.2.1.1); α-galactosidase (EC 3.2.1.22); amylopullulanase (EC 3.2.1.41); cyclomaltodextrinase (EC 3.2.1.54); branching enzyme (EC 2.4.1.18); 4-α-glucanotransferase (EC 2.4.1.25)
Mechanism Retaining
3D Structure Status( β / α ) 7
Catalytic Nucleophile/BaseGlu
Catalytic Proton DonorNot known
External resourcesCAZypedia;
Statistics GenBank accession (2027); Uniprot accession (519); PDB accession (10); 3D entries (5); cryst (0)
All (1943) Archaea (405) Bacteria (1536) unclassified (2) Structure (5) Characterized (24)
Archaea
Protein Name EC#OrganismGenBankUniprot
PDB/3D Carbohydrate Ligands Resolution (Å)
 glycogen branching enzyme (GBE;PhGBE;PH1386) 2.4.1.18
3.2.1.1
Pyrococcus horikoshii OT3 BAA30492.1
NP_143265.1
O50094
5WU7[A,B] 2.31
 branching enzyme (TkGBE;TK1436) 2.4.1.18 Thermococcus kodakarensis KOD1 BAD85625.1
CAT71088.1
Q5JDJ7
3N8T[A] 2.40
3N92[A] β-D-Glcp
2.89
3N98[A] β-D-Glcp
1.87
 4-α-glucanotransferase (Jgt) 2.4.1.25 Thermococcus litoralis BAA22063.1 O32462
1K1W[A] α-D-Glcp
2.80
1K1X[A,B] 2.40
1K1Y[A,B] <non_carb>-(1-4)-α-D-6-deoxy-Glcp4N-(1-4)-α-D-Glcp-(1-4)-α-D-Glcp
α-D-Glcp-(1-4)-α-D-Glcp
2.40
Bacteria
Protein Name EC#OrganismGenBankUniprot
PDB/3D Carbohydrate Ligands Resolution (Å)
 α-amylase (AmyC;TM1438) 3.2.1.1 Thermotoga maritima MSB8 AHD18669.1
AGL50368.1
AKE29197.1
 
2B5D[X] 2.20
 glycogen branching enzyme (GBE;TTHA1902;TT1467) 2.4.1.18 Thermus thermophilus HB8 BAD71725.1 Q5SH28
1UFA[A] 2.20
3P0B[A] 1.35
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