X-ray diffraction
1.6Å resolution

Crystal structure of NikA in complex with reduced Fe-L2 (N-(2-hydroxy-3-methoxybenzyl)-N'-(2-thiomethylbenzyl)- N,N'-ethylenediamine diacetic acid)


Function and Biology Details

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Nickel-binding periplasmic protein Chains: A, B
Molecule details ›
Chains: A, B
Length: 502 amino acids
Theoretical weight: 56.36 KDa
Source organism: Escherichia coli K-12
Expression system: Escherichia coli BL21(DE3)
  • Canonical: P33590 (Residues: 23-524; Coverage: 100%)
Gene names: JW3441, b3476, nikA
Sequence domains: Bacterial extracellular solute-binding proteins, family 5 Middle
Structure domains:

Ligands and Environments

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE BM30A
Spacegroup: P212121
Unit cell:
a: 86.536Å b: 94.092Å c: 124.564Å
α: 90° β: 90° γ: 90°
R R work R free
0.195 0.194 0.222
Expression system: Escherichia coli BL21(DE3)