X-ray diffraction
2.4Å resolution

Structure of the Class D Beta-Lactamase OXA-24 K84D in Acyl-Enzyme Complex with Oxacillin

Source organism: Acinetobacter baumannii
Entry authors: June CM, Vallier BC, Bonomo RA, Leonard DA, Powers RA

Function and Biology Details

Reaction catalysed:
A beta-lactam + H(2)O = a substituted beta-amino acid
Biochemical function:
Biological process:
  • not assigned
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Transpeptidase domain-containing protein Chain: A
Molecule details ›
Chain: A
Length: 245 amino acids
Theoretical weight: 27.66 KDa
Source organism: Acinetobacter baumannii
Expression system: Escherichia coli BL21(DE3)
  • Canonical: Q8RLA6 (Residues: 31-275; Coverage: 97%)
Gene names: SI89_16690, bla-OXA-40, blaOXA-24, blaOXA-33, blaOXA-40, oxa-24, oxa40
Sequence domains: Penicillin binding protein transpeptidase domain
Structure domains: DD-peptidase/beta-lactamase superfamily

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 21-ID-D
Spacegroup: P41212
Unit cell:
a: 102.334Å b: 102.334Å c: 87.444Å
α: 90° β: 90° γ: 90°
R R work R free
0.18 0.178 0.214
Expression system: Escherichia coli BL21(DE3)