X-ray diffraction
2.3Å resolution

Mycobacterium tuberculosis biotin ligase complexed with bisubstrate inhibitor 57 with azide in place of 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

2 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 17-ID
Spacegroup: P212121
Unit cell:
a: 63.367Å b: 68.841Å c: 114.452Å
α: 90° β: 90° γ: 90°
R R work R free
0.192 0.189 0.25
Expression system: Escherichia coli