X-ray diffraction
1.9Å resolution

Mycobacterium tuberculosis biotin ligase complexed with bisubstrate inhibitor 69 that has a fluorine in place of the ribose 2'OH


Function and Biology Details

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Possible bifunctional protein BirA: biotin operon repressor + biotin--[acetyl-CoA-carboxylase] synthetase (Biotin--protein ligase) Chains: A, B
Molecule details ›
Chains: A, B
Length: 270 amino acids
Theoretical weight: 28.53 KDa
Source organism: Mycobacterium tuberculosis
Expression system: Escherichia coli
  • Canonical: I6YFP0 (Residues: 2-266; Coverage: 100%)
Gene names: Rv3279c, birA
Sequence domains:
Structure domains:

Ligands and Environments

1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 17-ID
Spacegroup: P212121
Unit cell:
a: 63.449Å b: 68.875Å c: 115.581Å
α: 90° β: 90° γ: 90°
R R work R free
0.185 0.183 0.217
Expression system: Escherichia coli