PDBe 1ven

X-ray diffraction
2.02Å resolution

Crystal Structure Analysis of Y164E/maltose of Bacilus cereus Beta-amylase at pH 4.6


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
Beta-amylase Chain: A
Molecule details ›
Chain: A
Length: 516 amino acids
Theoretical weight: 58.32 KDa
Source organism: Bacillus cereus
Expression system: Escherichia coli
  • Canonical: P36924 (Residues: 31-546; Coverage: 100%)
Gene name: spoII
Sequence domains:
Structure domains:

Ligands and Environments

2 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: MACSCIENCE
Spacegroup: P21
Unit cell:
a: 57.489Å b: 92.899Å c: 65.962Å
α: 90° β: 102.36° γ: 90°
R R work R free
0.193 0.193 0.229
Expression system: Escherichia coli