PDBe 2guy

X-ray diffraction
1.59Å resolution

Orthorhombic crystal structure (space group P21212) of Aspergillus niger alpha-amylase at 1.6 A resolution

Source organism: Aspergillus oryzae
Primary publication:
Monoclinic crystal form of Aspergillus niger alpha-amylase in complex with maltose at 1.8 angstroms resolution.
Acta Crystallogr. Sect. F Struct. Biol. Cryst. Commun. 62 716-21 (2006)
PMID: 16880540

Function and Biology Details

Reaction catalysed:
Endohydrolysis of (1->4)-alpha-D-glucosidic linkages in polysaccharides containing three or more (1->4)-alpha-linked D-glucose units. 
Biochemical function:
Biological process:

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Alpha-amylase A type-1/2 Chain: A
Molecule details ›
Chain: A
Length: 478 amino acids
Theoretical weight: 52.53 KDa
Source organism: Aspergillus oryzae
  • Canonical: P0C1B3 (Residues: 22-499; Coverage: 100%)
Gene names: AO090023000944, AO090120000196, Taa-G1, Taa-G2, amy1, amy2, amyI, amyII
Sequence domains:
Structure domains:

Ligands and Environments

3 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID23-1
Spacegroup: P21212
Unit cell:
a: 102.799Å b: 63.228Å c: 74.456Å
α: 90° β: 90° γ: 90°
R R work R free
0.165 0.164 0.196