X-ray diffraction
3.7Å resolution

Structure of the NhaA dimer, crystallised at low pH


Function and Biology Details

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Entry contents:
1 distinct polypeptide molecule
Na(+)/H(+) antiporter NhaA Chains: A, B, C, D
Molecule details ›
Chains: A, B, C, D
Length: 401 amino acids
Theoretical weight: 42.96 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli BL21(DE3)
  • Canonical: P13738 (Residues: 1-388; Coverage: 100%)
Gene names: JW0018, ant, b0019, nhaA
Sequence domains: Na+/H+ antiporter 1
Structure domains: Na+/H+ antiporter like domain

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: DIAMOND BEAMLINE I24
Spacegroup: P21
Unit cell:
a: 115.8Å b: 100.56Å c: 141.612Å
α: 90° β: 97° γ: 90°
R R work R free
0.319 0.318 0.342
Expression system: Escherichia coli BL21(DE3)