2grx
From Proteopedia
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| , resolution 3.300Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , , , , , and | ||||||
| Gene: | fhuA (Escherichia coli), tonB (Escherichia coli) | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal structure of TonB in complex with FhuA, E. coli outer membrane receptor for ferrichrome
Overview
The cytoplasmic membrane protein TonB spans the periplasm of the Gram-negative bacterial cell envelope, contacts cognate outer membrane receptors, and facilitates siderophore transport. The outer membrane receptor FhuA from Escherichia coli mediates TonB-dependent import of ferrichrome. We report the 3.3 angstrom resolution crystal structure of the TonB carboxyl-terminal domain in complex with FhuA. TonB contacts stabilize FhuA's amino-terminal residues, including those of the consensus Ton box sequence that form an interprotein beta sheet with TonB through strand exchange. The highly conserved TonB residue arginine-166 is oriented to form multiple contacts with the FhuA cork, the globular domain enclosed by the beta barrel.
About this Structure
2GRX is a Protein complex structure of sequences from Escherichia coli. Full crystallographic information is available from OCA.
Reference
Structure of TonB in complex with FhuA, E. coli outer membrane receptor., Pawelek PD, Croteau N, Ng-Thow-Hing C, Khursigara CM, Moiseeva N, Allaire M, Coulton JW, Science. 2006 Jun 2;312(5778):1399-402. PMID:16741125
Page seeded by OCA on Thu Mar 20 17:08:19 2008
Categories: Escherichia coli | Protein complex | Allaire, M. | Coulton, J W. | Pawelek, P D. | DAO | DPO | EAP | FCI | FTT | MYR | PO4 | Beta barrel | Heterocomplex | Inter-protein beta sheet | Outer membrane | Protein-protein
