› 1ihr

X-ray diffraction
1.55Å resolution

Crystal structure of the dimeric C-terminal domain of TonB

Released:
DOI: 10.2210/pdb1ihr/pdb
PDB entry 1ihr coloured by chain, front view.
PDB entry 1ihr coloured by chain, side view.
PDB entry 1ihr coloured by chain, top view.
Source organism: Escherichia coli
Primary publication:
Crystal structure of the dimeric C-terminal domain of TonB reveals a novel fold.
Chang C, Mooser A, Plückthun A, Wlodawer A
J Biol Chem 276 27535-40 (2001)
PMID: 11328822

Function and Biology Details

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

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-136390 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Protein TonB Chains: A, B
Molecule details ›
Chains: A, B
Length: 76 amino acids
Theoretical weight: 8.56 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli
UniProt:
  • Canonical: P02929 (Residues: 164-239; Coverage: 32%)
Gene names: JW5195, b1252, exbA, tonB
Sequence domains: Gram-negative bacterial TonB protein C-terminal
Structure domains: TonB

Ligands and Environments

1 bound ligand:
Ligand BR 4 x BR
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: NSLS BEAMLINE X9B
Spacegroup: P21212
Unit cell:
a: 63.77Å b: 86.33Å c: 26.55Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.166 0.16 0.23
Expression system: Escherichia coli

Quick links

Citations

22 review citations

Bacterial iron homeostasis.
Andrews et al. (2003)
21 more

11 mentions without citation

ROSET Model of TonB Action in Gram-Negative Bacterial Iron Acquisition.
Klebba PE. (2016)
10 more