_EC 3.2.1.60 Glucan 1,4-alpha-maltotetraohydrolase. 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 3.2.1.60 Glucan 1,4-alpha-maltotetraohydrolase. [9 PDB entries]    
1gcy

Reaction: Hydrolysis of (1->4)-alpha-D-glucosidic linkages in amylaceous polysaccharides, to remove successive maltotetraose residues from the non-reducing chain ends.
Other name(s): Exo-maltotetraohydrolase. G4-amylase. Glucan 1,4-alpha-maltotetrahydrolase. Maltotetraose-forming amylase.
Comments: Compare Ec 3.2.1.2, which removes successive maltose residues, and Ec 3.2.1.98 and Ec 3.2.1.116.
Links:   [IntEnz]   [ExPASy]   [KEGG]  

There are 9 PDB entries in enzyme class E.C.3.2.1.60

  PDB code Protein
1gcy
High resolution crystal structure of maltotetraose-forming exo-amylase
Source: Pseudomonas stutzeri. Organism_taxid: 316. Strain: mo-19. Expressed in: escherichia coli. Expression_system_taxid: 562.
Chain: A (415 residues) CATH domains: 3.20.20.80 2.60.40.1180
1jda
Maltotetraose-forming exo-amylase
Source: Pseudomonas stutzeri. Organism_taxid: 316. Strain: mo-19. Expressed in: escherichia coli. Expression_system_taxid: 562.
Chain: A (418 residues) CATH domains: 3.20.20.80 2.60.40.1180
1jdc
Mutant (e219q) maltotetraose-forming exo-amylase cocrystallized with maltotetraose (crystal type 1)
Source: Pseudomonas stutzeri. Organism_taxid: 316. Strain: mo-19. Expressed in: escherichia coli. Expression_system_taxid: 562.
Chain: A (418 residues) CATH domains: 3.20.20.80 2.60.40.1180
1jdd
Mutant (e219q) maltotetraose-forming exo-amylase cocrystallized with maltotetraose (crystal type 2)
Source: Pseudomonas stutzeri. Organism_taxid: 316. Strain: mo-19. Expressed in: escherichia coli. Expression_system_taxid: 562.
Chain: A (418 residues) CATH domains: 3.20.20.80 2.60.40.1180
1qi3
Mutant (d193n) maltotetraose-forming exo-amylase in complex with maltotetraose
Source: Pseudomonas stutzeri. Organism_taxid: 316. Strain: mo-19. Expressed in: escherichia coli. Expression_system_taxid: 562.
Chain: A (418 residues) CATH domains: 3.20.20.80 2.60.40.1180
1qi4
Mutant (e219g) maltotetraose-forming exo-amylase in complex with maltotetraose
Source: Pseudomonas stutzeri. Organism_taxid: 316. Strain: mo-19. Expressed in: escherichia coli. Expression_system_taxid: 562.
Chain: A (418 residues) CATH domains: 3.20.20.80 2.60.40.1180
1qi5
Mutant (d294n) maltotetraose-forming exo-amylase in complex with maltotetraose
Source: Pseudomonas stutzeri. Organism_taxid: 316. Strain: mo-19. Expressed in: escherichia coli. Expression_system_taxid: 562.
Chain: A (418 residues) CATH domains: 3.20.20.80 2.60.40.1180
1qpk
Mutant (d193g) maltotetraose-forming exo-amylase in complex with maltotetraose
Source: Pseudomonas stutzeri. Organism_taxid: 316. Expressed in: escherichia coli. Expression_system_taxid: 562.
Chain: A (418 residues) CATH domains: 3.20.20.80 2.60.40.1180
2amg
Structure of hydrolase (glycosidase)
Source: Pseudomonas stutzeri. Organism_taxid: 316
Chain: A (415 residues) CATH domains: 3.20.20.80 2.60.40.1180