2vda

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{{Large structure}}
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==SOLUTION STRUCTURE OF THE SECA-SIGNAL PEPTIDE COMPLEX==
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{{STRUCTURE_2vda| PDB=2vda | SCENE= }}
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<StructureSection load='2vda' size='340' side='right' caption='[[2vda]], [[NMR_Ensembles_of_Models | 10 NMR models]]' scene=''>
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===SOLUTION STRUCTURE OF THE SECA-SIGNAL PEPTIDE COMPLEX===
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== Structural highlights ==
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{{ABSTRACT_PUBMED_18022369}}
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<table><tr><td colspan='2'>[[2vda]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2VDA OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2VDA FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1tm6|1tm6]], [[1tf5|1tf5]], [[1m6n|1m6n]], [[2fsf|2fsf]]</td></tr>
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2vda FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2vda OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2vda RCSB], [http://www.ebi.ac.uk/pdbsum/2vda PDBsum]</span></td></tr>
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<table>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/vd/2vda_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Recognition of signal sequences by cognate receptors controls the entry of virtually all proteins to export pathways. Despite its importance, this process remains poorly understood. Here, we present the solution structure of a signal peptide bound to SecA, the 204 kDa ATPase motor of the Sec translocase. Upon encounter, the signal peptide forms an alpha-helix that inserts into a flexible and elongated groove in SecA. The mode of binding is bimodal, with both hydrophobic and electrostatic interactions mediating recognition. The same groove is used by SecA to recognize a diverse set of signal sequences. Impairment of the signal-peptide binding to SecA results in significant translocation defects. The C-terminal tail of SecA occludes the groove and inhibits signal-peptide binding, but autoinhibition is relieved by the SecB chaperone. Finally, it is shown that SecA interconverts between two conformations in solution, suggesting a simple mechanism for polypeptide translocation.
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==About this Structure==
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Structural basis for signal-sequence recognition by the translocase motor SecA as determined by NMR.,Gelis I, Bonvin AM, Keramisanou D, Koukaki M, Gouridis G, Karamanou S, Economou A, Kalodimos CG Cell. 2007 Nov 16;131(4):756-69. PMID:18022369<ref>PMID:18022369</ref>
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[[2vda]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2VDA OCA].
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
==See Also==
==See Also==
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*[[Preprotein translocase|Preprotein translocase]]
*[[SecA|SecA]]
*[[SecA|SecA]]
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:018022369</ref><references group="xtra"/>
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__TOC__
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</StructureSection>
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
[[Category: Bonvin, A M.J J.]]
[[Category: Bonvin, A M.J J.]]

Revision as of 01:26, 1 October 2014

SOLUTION STRUCTURE OF THE SECA-SIGNAL PEPTIDE COMPLEX

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