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==SOLUTION NMR STRUCTURE OF ECTODOMAIN OF SIV GP41, RESTRAINED REGULARIZED MEAN STRUCTURE PLUS 29 SIMULATED ANNEALING STRUCTURES==
==SOLUTION NMR STRUCTURE OF ECTODOMAIN OF SIV GP41, RESTRAINED REGULARIZED MEAN STRUCTURE PLUS 29 SIMULATED ANNEALING STRUCTURES==
<StructureSection load='1qce' size='340' side='right'caption='[[1qce]], [[NMR_Ensembles_of_Models | 30 NMR models]]' scene=''>
<StructureSection load='1qce' size='340' side='right'caption='[[1qce]]' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1qce]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Simian_immunodeficiency_virus Simian immunodeficiency virus]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QCE OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1QCE FirstGlance]. <br>
<table><tr><td colspan='2'>[[1qce]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Simian_immunodeficiency_virus Simian immunodeficiency virus]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QCE OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1QCE FirstGlance]. <br>
</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1qce FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qce OCA], [https://pdbe.org/1qce PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1qce RCSB], [https://www.ebi.ac.uk/pdbsum/1qce PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1qce ProSAT]</span></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1qce FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qce OCA], [https://pdbe.org/1qce PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1qce RCSB], [https://www.ebi.ac.uk/pdbsum/1qce PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1qce ProSAT]</span></td></tr>
</table>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q88031_SIV Q88031_SIV]
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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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/main_output.php?pdb_ID=1qce ConSurf].
</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/main_output.php?pdb_ID=1qce ConSurf].
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== Publication Abstract from PubMed ==
The solution structure of the ectodomain of simian immunodeficiency virus (SIV) gp41 (e-gp41), consisting of residues 27-149, has been determined by multidimensional heteronuclear NMR spectroscopy. SIV e-gp41 is a symmetric 44 kDa trimer with each subunit consisting of antiparallel N-terminal (residues 30-80) and C-terminal (residues 107-147) helices connected by a 26 residue loop (residues 81-106). The N-terminal helices of each subunit form a parallel coiled-coil structure in the interior of the complex which is surrounded by the C-terminal helices located on the exterior of the complex. The loop region is ordered and displays numerous intermolecular and non-sequential intramolecular contacts. The helical core of SIV e-gp41 is similar to recent X-ray structures of truncated constructs of the helical core of HIV-1 e-gp41. The present structure establishes unambiguously the connectivity of the N- and C-terminal helices in the trimer, and characterizes the conformation of the intervening loop, which has been implicated by mutagenesis and antibody epitope mapping to play a key role in gp120 association. In conjunction with previous studies, the solution structure of the SIV e-gp41 ectodomain provides insight into the binding site of gp120 and the mechanism of cell fusion. The present structure of SIV e-gp41 represents one of the largest protein structures determined by NMR to date.
Three-dimensional solution structure of the 44 kDa ectodomain of SIV gp41.,Caffrey M, Cai M, Kaufman J, Stahl SJ, Wingfield PT, Covell DG, Gronenborn AM, Clore GM EMBO J. 1998 Aug 17;17(16):4572-84. PMID:9707417<ref>PMID:9707417</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1qce" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Gp41 3D Structures|Gp41 3D Structures]]
*[[Gp41 3D Structures|Gp41 3D Structures]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Simian immunodeficiency virus]]
[[Category: Simian immunodeficiency virus]]
[[Category: Clore, G M]]
[[Category: Clore GM]]
[[Category: Siv gp41 ectodomain]]
[[Category: Viral protein]]
[[Category: Virus envelope protein]]

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