Glycoside Hydrolase Family 13 / Subf 19

Activities in Sub Family[retaining] maltopentaose-producing a-amylase (EC 3.2.1.-);[retaining] a-amylase (EC 3.2.1.1);[retaining] maltotetraose-producing a-amylase (EC 3.2.1.60);[retaining] maltohexaose-producing a-amylase (EC 3.2.1.98)
Mechanism Retaining
ClanGH-H
3D Structure Status( β / α ) 8 barrel
Catalytic Nucleophile/BaseAsp (experimental)
Catalytic Proton DonorGlu (experimental)
NoteNew: many members have been assigned to subfamilies as described by Stam et al. (2006) Protein Eng Des Sel. 19, 555-562 (PMID: 17085431)
External resourcesCAZypedia; EBI Protein of the Month; HOMSTRAD; PDB Molecule of the Month; PRINTS;
Commercial Enzyme Provider(s)MEGAZYME; PROZOMIX;
Statistics GenBank accession (4838); Uniprot accession (8);
Bacteria
Protein Name EC#ReferenceOrganismGenBank UniprotPDB/3DSubf
 maltohexaose-forming amylase (G6-amylase) 3.2.1.98 pubmed
Bacillus sp. (in: Bacteria) H-167 CAA39096.1 Q45574   19
 α-amylase (MalS;b3571) 3.2.1.1 pubmed
Escherichia coli str. K-12 substr. MG1655 AAB18548.1
AAC76595.1
AIZ93631.1
ALI38743.1
AMC96456.1
AUG18278.1
AVI53735.1
AYG17489.1
CAA41740.1
NP_418028.1
P25718   19
 α-amylase I (AmyI) (alkaline;thermostable) 3.2.1.1   Halalkalibacterium halodurans 38C-2-1 BAF93484.1 A8QWV3   19
 α-amylase G-6 (BH0413) 3.2.1.98   Alkalihalobacillus halodurans C-125 BAB04132.1
NP_241279.1
Q9KFR4   19
 maltohexaose-forming α-amylase (Amy 34) 3.2.1.98   Halalkalibacterium halodurans LBK 34 AAS99099.1 Q5GIA5   19
 maltotetraose-producing α-amylase (AmyA) (alkaline, thermotolerant) 3.2.1.60   Halalkalibacterium halodurans MS-2-5 BAG70894.1 B5MEM6   19
 maltohexaose-forming α-amylase (AmyG6) 3.2.1.98   Klebsiella pneumoniae BAA88434.1 Q9RHR1   19
 maltopentaose-forming amylase A-180 3.2.1.- pubmed
unidentified bacterium UGO163/26 / DSM 5853 CAA37453.1 Q03658   19
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