› 1qxx

X-ray diffraction
2.7Å resolution

CRYSTAL STRUCTURE OF THE C-TERMINAL DOMAIN OF TONB

Released:
DOI: 10.2210/pdb1qxx/pdb
PDB entry 1qxx coloured by chain, front view.
PDB entry 1qxx coloured by chain, side view.
PDB entry 1qxx coloured by chain, top view.
Source organism: Escherichia coli
Primary publication:
Dimerization of TonB is not essential for its binding to the outer membrane siderophore receptor FhuA of Escherichia coli.
Koedding J, Howard P, Kaufmann L, Polzer P, Lustig A, Welte W
J Biol Chem 279 9978-86 (2004)
PMID: 14665631

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 Chain: A
Molecule details ›
Chain: A
Length: 76 amino acids
Theoretical weight: 8.56 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli BL21(DE3)
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

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID14-4
Spacegroup: P6422
Unit cell:
a: 61.58Å b: 61.58Å c: 121.95Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.267 0.267 0.271
Expression system: Escherichia coli BL21(DE3)

Quick links

Citations

5 review citations

Bacterial iron sources: from siderophores to hemophores.
Wandersman et al. (2004)
4 more

3 mentions without citation

Structure and Stoichiometry of the Ton Molecular Motor.
Celia et al. (2020)
2 more