2lp7: Difference between revisions
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==Structure of gp41-M-MAT, a membrane associated MPER trimer from HIV-1 gp41.== | ==Structure of gp41-M-MAT, a membrane associated MPER trimer from HIV-1 gp41.== | ||
<StructureSection load='2lp7' size='340' side='right' caption='[[2lp7]], [[NMR_Ensembles_of_Models | 11 NMR models]]' scene=''> | <StructureSection load='2lp7' size='340' side='right'caption='[[2lp7]], [[NMR_Ensembles_of_Models | 11 NMR models]]' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[2lp7]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/9hiv1 9hiv1]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2LP7 OCA]. For a <b>guided tour on the structure components</b> use [http:// | <table><tr><td colspan='2'>[[2lp7]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/9hiv1 9hiv1]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2LP7 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=2LP7 FirstGlance]. <br> | ||
</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http:// | </td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=2lp7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2lp7 OCA], [http://pdbe.org/2lp7 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2lp7 RCSB], [http://www.ebi.ac.uk/pdbsum/2lp7 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2lp7 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
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__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Large Structures]] | |||
[[Category: Reardon, P N]] | [[Category: Reardon, P N]] | ||
[[Category: Gp41]] | [[Category: Gp41]] | ||
[[Category: Viral protein]] | [[Category: Viral protein]] | ||
Revision as of 10:06, 6 May 2020
Structure of gp41-M-MAT, a membrane associated MPER trimer from HIV-1 gp41.Structure of gp41-M-MAT, a membrane associated MPER trimer from HIV-1 gp41.
Structural highlights
Publication Abstract from PubMedThe membrane proximal external region (MPER) of HIV-1 glycoprotein (gp) 41 is involved in viral-host cell membrane fusion. It contains short amino acid sequences that are binding sites for the HIV-1 broadly neutralizing antibodies 2F5, 4E10, and 10E8, making these binding sites important targets for HIV-1 vaccine development. We report a high-resolution structure of a designed MPER trimer assembled on a detergent micelle. The NMR solution structure of this trimeric domain, designated gp41-M-MAT, shows that the three MPER peptides each adopt symmetric alpha-helical conformations exposing the amino acid side chains of the antibody binding sites. The helices are closely associated at their N termini, bend between the 2F5 and 4E10 epitopes, and gradually separate toward the C termini, where they associate with the membrane. The mAbs 2F5 and 4E10 bind gp41-M-MAT with nanomolar affinities, consistent with the substantial exposure of their respective epitopes in the trimer structure. The traditional structure determination of gp41-M-MAT using the Xplor-NIH protocol was validated by independently determining the structure using the DISCO sparse-data protocol, which exploits geometric arrangement algorithms that guarantee to compute all structures and assignments that satisfy the data. Structure of an HIV-1-neutralizing antibody target, the lipid-bound gp41 envelope membrane proximal region trimer.,Reardon PN, Sage H, Dennison SM, Martin JW, Donald BR, Alam SM, Haynes BF, Spicer LD Proc Natl Acad Sci U S A. 2014 Jan 28;111(4):1391-6. doi:, 10.1073/pnas.1309842111. Epub 2014 Jan 13. PMID:24474763[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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