› 1rpk

X-ray diffraction
2Å resolution

Crystal structure of barley alpha-amylase isozyme 1 (amy1) in complex with acarbose

Released:
DOI: 10.2210/pdb1rpk/pdb
PDB entry 1rpk coloured by chain, front view.
PDB entry 1rpk coloured by chain, side view.
PDB entry 1rpk coloured by chain, top view.
Source organism: Hordeum vulgare
Primary publication:
Oligosaccharide binding to barley alpha-amylase 1.
Robert X, Haser R, Mori H, Svensson B, Aghajari N
J Biol Chem 280 32968-78 (2005)
PMID: 16030022

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:
Cellular component:
Sequence domains:
Structure domains:

Structure analysis Details

Assembly composition:
monomeric (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-132830 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecules (3 distinct):
Alpha-amylase type A isozyme Chain: A
Molecule details ›
Chain: A
Length: 405 amino acids
Theoretical weight: 44.64 KDa
Source organism: Hordeum vulgare
Expression system: Komagataella pastoris
UniProt:
  • Canonical: P00693 (Residues: 25-429; Coverage: 98%)
Gene name: AMY1.1
Sequence domains:
Structure domains:

Ligands and Environments

Carbohydrate polymer : NEW Components: GLC, DAF
Ligand GLC 2 x GLC
Ligand DAF 2 x DAF
Carbohydrate polymer : NEW Components: GLC, DAF
Ligand GLC 2 x GLC
Ligand DAF 1 x DAF
1 bound ligand:
Ligand CA 3 x CA
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ENRAF-NONIUS FR591
Spacegroup: P21212
Unit cell:
a: 93.39Å b: 72.92Å c: 61.39Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.18 0.18 0.231
Expression system: Komagataella pastoris

Quick links

Citations

10 review citations

The carbohydrate-binding module family 20--diversity, structure, and function.
Christiansen et al. (2009)
9 more

2 mentions without citation

Purification of an alpha amylase from Aspergillus flavus NSH9 and molecular characterization of its nucleotide gene sequence.
Karim et al. (2018)
1 more