2x83: Difference between revisions
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The | ==Evolutionary basis of HIV restriction by the antiretroviral TRIMCyp== | ||
<StructureSection load='2x83' size='340' side='right'caption='[[2x83]], [[Resolution|resolution]] 1.70Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[2x83]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Human_immunodeficiency_virus_type_1_lw12.3_isolate Human immunodeficiency virus type 1 lw12.3 isolate] and [https://en.wikipedia.org/wiki/Macaca_fascicularis Macaca fascicularis]. The July 2013 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''HIV Capsid'' by David Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2013_7 10.2210/rcsb_pdb/mom_2013_7]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2X83 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2X83 FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.7Å</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=2x83 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2x83 OCA], [https://pdbe.org/2x83 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2x83 RCSB], [https://www.ebi.ac.uk/pdbsum/2x83 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2x83 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/E9MJX7_9HIV1 E9MJX7_9HIV1] | |||
== Evolutionary Conservation == | |||
[[Image:Consurf_key_small.gif|200px|right]] | |||
Check<jmol> | |||
<jmolCheckbox> | |||
<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/x8/2x83_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | |||
<text>to colour the structure by Evolutionary Conservation</text> | |||
</jmolCheckbox> | |||
</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=2x83 ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
TRIMCyps are anti-retroviral proteins that have arisen independently in New World and Old World primates. All TRIMCyps comprise a CypA domain fused to the tripartite domains of TRIM5alpha but they have distinct lentiviral specificities, conferring HIV-1 restriction in New World owl monkeys and HIV-2 restriction in Old World rhesus macaques. Here we provide evidence that Asian macaque TRIMCyps have acquired changes that switch restriction specificity between different lentiviral lineages, resulting in species-specific alleles that target different viruses. Structural, thermodynamic and viral restriction analysis suggests that a single mutation in the Cyp domain, R69H, occurred early in macaque TRIMCyp evolution, expanding restriction specificity to the lentiviral lineages found in African green monkeys, sooty mangabeys and chimpanzees. Subsequent mutations have enhanced restriction to particular viruses but at the cost of broad specificity. We reveal how specificity is altered by a scaffold mutation, E143K, that modifies surface electrostatics and propagates conformational changes into the active site. Our results suggest that lentiviruses may have been important pathogens in Asian macaques despite the fact that there are no reported lentiviral infections in current macaque populations. | |||
Conformational adaptation of Asian macaque TRIMCyp directs lineage specific antiviral activity.,Ylinen LM, Price AJ, Rasaiyaah J, Hue S, Rose NJ, Marzetta F, James LC, Towers GJ PLoS Pathog. 2010 Aug 19;6(8). pii: e1001062. PMID:20808866<ref>PMID:20808866</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 2x83" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Virus coat proteins 3D structures|Virus coat proteins 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: HIV Capsid]] | |||
[[Category: Human immunodeficiency virus type 1 lw12 3 isolate]] | |||
[[Category: Large Structures]] | |||
[[Category: Macaca fascicularis]] | |||
[[Category: RCSB PDB Molecule of the Month]] | |||
[[Category: James LC]] | |||
[[Category: Price AJ]] | |||