PDBe 2dqx

X-ray diffraction
2.2Å resolution

mutant beta-amylase (W55R) from soy bean

Released:

Function and Biology Details

Reaction catalysed:
Hydrolysis of (1->4)-alpha-D-glucosidic linkages in polysaccharides so as to remove successive maltose units from the non-reducing ends of the chains. 
Biochemical function:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Beta-amylase Chain: A
Molecule details ›
Chain: A
Length: 495 amino acids
Theoretical weight: 55.97 KDa
Source organism: Glycine max
Expression system: Escherichia coli
UniProt:
  • Canonical: Q42795 (Residues: 2-496; Coverage: 100%)
Gene names: BMY1, GLYMA_06G301500
Sequence domains: Glycosyl hydrolase family 14
Structure domains: Glycosidases

Ligands and Environments

No bound ligands

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SPRING-8 BEAMLINE BL24XU
Spacegroup: P3121
Unit cell:
a: 85.042Å b: 85.042Å c: 145.083Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.206 0.206 0.252
Expression system: Escherichia coli