2grx: Difference between revisions
New page: left|200px<br /><applet load="2grx" size="450" color="white" frame="true" align="right" spinBox="true" caption="2grx, resolution 3.300Å" /> '''Crystal structure o... |
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[[Image:2grx.gif|left|200px]]<br /><applet load="2grx" size=" | [[Image:2grx.gif|left|200px]]<br /><applet load="2grx" size="350" color="white" frame="true" align="right" spinBox="true" | ||
caption="2grx, resolution 3.300Å" /> | caption="2grx, resolution 3.300Å" /> | ||
'''Crystal structure of TonB in complex with FhuA, E. coli outer membrane receptor for ferrichrome'''<br /> | '''Crystal structure of TonB in complex with FhuA, E. coli outer membrane receptor for ferrichrome'''<br /> | ||
==Overview== | ==Overview== | ||
The cytoplasmic membrane protein TonB spans the periplasm of the | 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== | ==About this Structure== | ||
2GRX is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli] with PO4, FTT, DPO, DAO, MYR, EAP and FCI as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http:// | 2GRX is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli] with <scene name='pdbligand=PO4:'>PO4</scene>, <scene name='pdbligand=FTT:'>FTT</scene>, <scene name='pdbligand=DPO:'>DPO</scene>, <scene name='pdbligand=DAO:'>DAO</scene>, <scene name='pdbligand=MYR:'>MYR</scene>, <scene name='pdbligand=EAP:'>EAP</scene> and <scene name='pdbligand=FCI:'>FCI</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2GRX OCA]. | ||
==Reference== | ==Reference== | ||
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[[Category: Protein complex]] | [[Category: Protein complex]] | ||
[[Category: Allaire, M.]] | [[Category: Allaire, M.]] | ||
[[Category: Coulton, J | [[Category: Coulton, J W.]] | ||
[[Category: Pawelek, P | [[Category: Pawelek, P D.]] | ||
[[Category: DAO]] | [[Category: DAO]] | ||
[[Category: DPO]] | [[Category: DPO]] | ||
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[[Category: protein-protein]] | [[Category: protein-protein]] | ||
''Page seeded by [http:// | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 17:34:40 2008'' | ||
Revision as of 15:34, 21 February 2008
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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 with PO4, FTT, DPO, DAO, MYR, EAP and FCI as ligands. 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
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