PDBe 1kwk

X-ray diffraction
2.2Å resolution

Crystal structure of Thermus thermophilus A4 beta-galactosidase in complex with galactose

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
homo trimer (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Beta-galactosidase Chain: A
Molecule details ›
Chain: A
Length: 645 amino acids
Theoretical weight: 72.91 KDa
Source organism: Thermus thermophilus
Expression system: Escherichia coli
UniProt:
  • Canonical: O69315 (Residues: 1-645; Coverage: 100%)
Sequence domains:
Structure domains:

Ligands and Environments


No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: PHOTON FACTORY BEAMLINE BL-18B
Spacegroup: P321
Unit cell:
a: 97.592Å b: 97.592Å c: 128.898Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.171 0.169 0.2
Expression system: Escherichia coli