_EC 3.2.1.98 Glucan 1,4-alpha-maltohexaosidase. 9 PDB entries  
EC 3.-.-.- Hydrolases. [21,051 PDB entries]
EC 3.2.-.- Glycosylases. [4,101 PDB entries]
EC 3.2.1.- Glycosidases, i.e. enzymes hydrolyzing O- and S-glycosyl compound [3,577 PDB entries]
EC 3.2.1.98 Glucan 1,4-alpha-maltohexaosidase. [9 PDB entries]    
1wp6

Reaction: Hydrolysis of (1->4)-alpha-D-glucosidic linkages in amylaceous polysaccharides, to remove successive maltohexaose residues from the non- reducing chain ends.
Other name(s): Exo-maltohexaohydrolase. G6-amylase. Maltohexaose-producing amylase.
Comments: Cf. Ec 3.2.1.3, which removes successive glucose residues. Cf. Ec 3.2.1.2, which removes successive maltose residues. Cf. Ec 3.2.1.116, which removes successive maltotriose residues. Cf. Ec 3.2.1.60, which removes successive maltotetraose residues. The products have the alpha-configuration.
Links:   [IntEnz]   [ExPASy]   [KEGG]  

There are 9 PDB entries in enzyme class E.C.3.2.1.98

  PDB code Protein
1wp6
Crystal structure of maltohexaose-producing amylase from alk bacillus sp.707.
Source: Bacillus sp.. Organism_taxid: 1416. Strain: 707. Expressed in: bacillus subtilis. Expression_system_taxid: 1423.
Chain: A (481 residues) CATH domains: 3.20.20.80 Unassigned 2.60.40.1180
1wpc
Crystal structure of maltohexaose-producing amylase complexe pseudo-maltononaose
Source: Bacillus sp.. Organism_taxid: 1416. Strain: 707. Expressed in: bacillus subtilis. Expression_system_taxid: 1423.
Chain: A (481 residues) CATH domains: 3.20.20.80 Unassigned 2.60.40.1180
2d3l
Crystal structure of maltohexaose-producing amylase from bac sp.707 complexed with maltopentaose.
Source: Bacillus sp.. Organism_taxid: 1416. Strain: 707. Expressed in: bacillus subtilis. Expression_system_taxid: 1423.
Chain: A (481 residues) CATH domains: 3.20.20.80 Unassigned 2.60.40.1180
2d3n
Crystal structure of maltohexaose-producing amylase from bac sp.707 complexed with maltohexaose
Source: Bacillus sp.. Organism_taxid: 1416. Strain: 707. Expressed in: bacillus subtilis. Expression_system_taxid: 1423.
Chain: A (481 residues) CATH domains: 3.20.20.80 Unassigned 2.60.40.1180
2gjp
Structure of bacillus halmapalus alpha-amylase, crystallized with the substrate analogue acarbose and maltose
Source: Bacillus halmapalus. Organism_taxid: 79882. Expressed in: bacillus subtilis. Expression_system_taxid: 1423
Chain: A (481 residues) CATH domains: 3.20.20.80 Unassigned 2.60.40.1180
2gjr
Structure of bacillus halmapalus alpha-amylase without any substrate analogues
Source: Bacillus halmapalus. Organism_taxid: 79882. Expressed in: bacillus subtilis. Expression_system_taxid: 1423
Chain: A (481 residues) CATH domains: 3.20.20.80 Unassigned 2.60.40.1180
3bc9
Alpha-amylase b in complex with acarbose
Source: Halothermothrix orenii. Organism_taxid: 373903. Strain: h 168. Gene: amyb. Expressed in: escherichia coli bl21(de3). Expression_system_taxid: 469008.
Chain: A (585 residues) CATH domains: Unassigned 3.20.20.80 Unassigned 2.60.40.1180
3bcd
Alpha-amylase b in complex with maltotetraose and alpha-cycl
Source: Halothermothrix orenii. Organism_taxid: 373903. Strain: h 168. Gene: amyb. Expressed in: escherichia coli bl21(de3). Expression_system_taxid: 469008.
Chain: A (585 residues) CATH domains: Unassigned 3.20.20.80 Unassigned 2.60.40.1180
3bcf
Alpha-amylase b from halothermothrix orenii
Source: Halothermothrix orenii. Organism_taxid: 373903. Strain: h 168. Gene: amyb. Expressed in: escherichia coli bl21(de3). Expression_system_taxid: 469008.
Chain: A (585 residues) CATH domains: Unassigned 3.20.20.80 Unassigned 2.60.40.1180