X-ray diffraction
2.7Å resolution

Crystal structure of the BlaI repressor in complex with DNA


Function and Biology Details

Structure analysis Details

Assembly composition:
hetero tetramer (preferred)
Entry contents:
1 distinct polypeptide molecule
1 distinct DNA molecule
Macromolecules (2 distinct):
Penicillinase repressor Chain: A
Molecule details ›
Chain: A
Length: 126 amino acids
Theoretical weight: 14.99 KDa
Source organism: Staphylococcus aureus
Expression system: Escherichia coli
  • Canonical: P0A042 (Residues: 1-126; Coverage: 100%)
Gene names: blaI, penI
Sequence domains: Penicillinase repressor
Structure domains:
Molecule details ›
Chain: B
Length: 16 nucleotides
Theoretical weight: 4.9 KDa
Source organism: Staphylococcus aureus
Expression system: Not provided

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: NSLS BEAMLINE X12C
Spacegroup: I4122
Unit cell:
a: 72.141Å b: 72.141Å c: 243.472Å
α: 90° β: 90° γ: 90°
R R work R free
0.238 0.23 0.282
Expression systems:
  • Escherichia coli
  • Not provided