PDBe 1rcq

X-ray diffraction
1.45Å resolution

The 1.45 A crystal structure of alanine racemase from a pathogenic bacterium, Pseudomonas aeruginosa, contains both internal and external aldimine forms


Function and Biology Details

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Entry contents:
1 distinct polypeptide molecule
Alanine racemase, catabolic Chain: A
Molecule details ›
Chain: A
Length: 357 amino acids
Theoretical weight: 39.16 KDa
Source organism: Pseudomonas aeruginosa
Expression system: Escherichia coli BL21
  • Canonical: Q9HTQ2 (Residues: 1-357; Coverage: 100%)
Gene names: PA5302, dadX
Sequence domains:
Structure domains:

Ligands and Environments

2 bound ligands:

1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 14-BM-D
Spacegroup: C2221
Unit cell:
a: 72.679Å b: 76.129Å c: 136.266Å
α: 90° β: 90° γ: 90°
R R work R free
0.153 0.149 0.206
Expression system: Escherichia coli BL21