Activities in Sub Family	[retaining] α-amylase (EC 3.2.1.1); [retaining] neopullulanase (EC 3.2.1.135); [retaining] cyclomaltodextrinase (EC 3.2.1.54);
Mechanism	Retaining a
Clan	GH-H
3D Structure Status	( β / α ) 8 barrel
Catalytic Nucleophile/Base	Asp (experimental)
Catalytic Proton Donor	Glu (experimental)
Note	New: many members have been assigned to subfamilies as described by Stam et al. (2006) Protein Eng Des Sel. 19, 555-562 (PMID: 17085431)
External resources	CAZypedia; EBI Protein of the Month; HOMSTRAD; PDB Molecule of the Month; PRINTS;
Commercial Enzyme Provider(s)	MEGAZYME; PROZOMIX;
Statistics	GenBank accession (1322); Uniprot accession (7); PDB accession (6); 3D entries (1); cryst (0)

Bacteria
Protein Name	EC#	Organism	GenBank	Uniprot	PDB/3D Carbohydrate Ligands Resolution (Å)	Subf
cyclomaltodextrinase (CDase; FspCMD)	3.2.1.54	Flavobacterium sp. 92	CAD32957.1	Q8KKG0	1H3G[A,B] 2.10 3EDD[A,B] a-cyclodextrin 2.65 3EDE[A,B] 1.71 3EDF[A,B] a-cyclodextrin 1.65 3EDJ[A,B] b-cyclodextrin 1.69 3EDK[A,B] α-D-4-deoxy-Glcp-(1-4)-α-D-Glcp-(1-4)-α-D-Glcp-(1-4)-α-D-Glcp-(1-4)-α-D-Glcp-(1-4)-α-D-Glcp-(1-4)-α-D-Glcp-(1-4)-α-D-Glcp 1.77	46
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