1lbi

X-ray diffraction
2.7Å resolution

LAC REPRESSOR

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
homo tetramer (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Lactose operon repressor Chains: A, B, C, D
Molecule details ›
Chains: A, B, C, D
Length: 360 amino acids
Theoretical weight: 38.66 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli
UniProt:
  • Canonical: P03023 (Residues: 1-360; Coverage: 100%)
Gene names: JW0336, b0345, lacI
Sequence domains:
Structure domains: Rossmann fold

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
Spacegroup: C2
Unit cell:
a: 160.3Å b: 73.3Å c: 147.8Å
α: 90° β: 120.3° γ: 90°
R-values:
R R work R free
0.25 0.25 not available
Expression system: Escherichia coli