› 1tk6

X-ray diffraction
2.2Å resolution

Iron-oxo clusters biomineralizing on protein surfaces. Structural analysis of H.salinarum DpsA in its low and high iron states

Released:
DOI: 10.2210/pdb1tk6/pdb
PDB entry 1tk6 coloured by chain, front view.
PDB entry 1tk6 coloured by chain, side view.
PDB entry 1tk6 coloured by chain, top view.
Source organism: Halobacterium salinarum
Primary publication:
Iron-oxo clusters biomineralizing on protein surfaces: structural analysis of Halobacterium salinarum DpsA in its low- and high-iron states.
Zeth K, Offermann S, Essen LO, Oesterhelt D
Proc Natl Acad Sci U S A 101 13780-5 (2004)
PMID: 15365182

Function and Biology Details

Biochemical function:
Biological process:
Cellular component:
Sequence domains:
Structure domain:

Structure analysis Details

Assembly composition:
homo dodecamer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-574672 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
DNA protection during starvation protein Chains: A, B, C, D
Molecule details ›
Chains: A, B, C, D
Length: 182 amino acids
Theoretical weight: 20.12 KDa
Source organism: Halobacterium salinarum
UniProt:
  • Canonical: Q9HMP7 (Residues: 1-182; Coverage: 100%)
Gene names: OE4427R, VNG_2443G, dps, dpsA
Sequence domains: Ferritin-like domain
Structure domains: Ferritin

Ligands and Environments

4 bound ligands:
Ligand SO4 2 x SO4
Ligand FE 6 x FE
Ligand MG 4 x MG
Ligand NA 2 x NA
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID29
Spacegroup: P321
Unit cell:
a: 91.11Å b: 91.11Å c: 150.04Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.177 0.172 0.235

Quick links

Citations

9 review citations

Structure, function and regulation of the DNA-binding protein Dps and its role in acid and oxidative stress resistance in Escherichia coli: a review.
Calhoun et al. (2011)
8 more

3 mentions without citation

Iron-oxo clusters biomineralizing on protein surfaces: structural analysis of Halobacterium salinarum DpsA in its low- and high-iron states.
Zeth et al. (2004)
2 more