X-ray diffraction
2.1Å resolution

Amylosucrase soaked with 14mM sucrose.


Function and Biology Details

Reaction catalysed:
Sucrose + ((1->4)-alpha-D-glucosyl)(n) = D-fructose + ((1->4)-alpha-D-glucosyl)(n+1)

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecules (2 distinct):
Amylosucrase Chain: A
Molecule details ›
Chain: A
Length: 628 amino acids
Theoretical weight: 71.56 KDa
Source organism: Neisseria polysaccharea
Expression system: Escherichia coli
  • Canonical: Q9ZEU2 (Residues: 13-636; Coverage: 98%)
Gene name: ams
Sequence domains: Alpha amylase, catalytic domain
Structure domains:

Ligands and Environments

Carbohydrate polymer : NEW Components: GLC, FRU
1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID14-4
Spacegroup: P21212
Unit cell:
a: 96.109Å b: 116.972Å c: 60.562Å
α: 90° β: 90° γ: 90°
R R work R free
0.185 0.185 0.224
Expression system: Escherichia coli