X-ray diffraction
2Å resolution

Phosphorylase recognition and phosphorylysis of its oligosaccharide substrate: answers to a long outstanding question


Function and Biology Details

Reaction catalysed:
((1->4)-alpha-D-glucosyl)(n) + phosphate = ((1->4)-alpha-D-glucosyl)(n-1) + alpha-D-glucose 1-phosphate
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecules (2 distinct):
Maltodextrin phosphorylase Chains: A, B
Molecule details ›
Chains: A, B
Length: 796 amino acids
Theoretical weight: 90.5 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli
  • Canonical: P00490 (Residues: 2-797; Coverage: 100%)
Gene names: JW5689, b3417, malP
Sequence domains: Carbohydrate phosphorylase
Structure domains: Glycogen Phosphorylase B;

Ligands and Environments

Cofactor: Ligand PLP 2 x PLP
Carbohydrate polymer : NEW Components: GLC, SGC
2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SRS BEAMLINE PX9.6
Spacegroup: P21
Unit cell:
a: 107.41Å b: 61.5Å c: 132.38Å
α: 90° β: 105.03° γ: 90°
R R work R free
0.228 0.228 0.261
Expression system: Escherichia coli