3dph: Difference between revisions
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==HIV-1 capsid C-terminal domain mutant (L211S)== | ==HIV-1 capsid C-terminal domain mutant (L211S)== | ||
<StructureSection load='3dph' size='340' side='right' caption='[[3dph]], [[Resolution|resolution]] 2.01Å' scene=''> | <StructureSection load='3dph' size='340' side='right'caption='[[3dph]], [[Resolution|resolution]] 2.01Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[3dph]] is a 2 chain structure with sequence from [ | <table><tr><td colspan='2'>[[3dph]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/9hiv1 9hiv1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3DPH OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3DPH FirstGlance]. <br> | ||
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3ds4|3ds4]], [[3ds2|3ds2]], [[3ds3|3ds3]], [[3dtj|3dtj]], [[3ds1|3ds1]], [[3ds5|3ds5]], [[3ds0|3ds0]]</td></tr> | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[3ds4|3ds4]], [[3ds2|3ds2]], [[3ds3|3ds3]], [[3dtj|3dtj]], [[3ds1|3ds1]], [[3ds5|3ds5]], [[3ds0|3ds0]]</div></td></tr> | ||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">gag ([ | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">gag ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=11676 9HIV1])</td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3dph FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3dph OCA], [https://pdbe.org/3dph PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3dph RCSB], [https://www.ebi.ac.uk/pdbsum/3dph PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3dph ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[[ | [[https://www.uniprot.org/uniprot/Q72497_9HIV1 Q72497_9HIV1]] Capsid protein p24 forms the conical core of the virus that encapsulates the genomic RNA-nucleocapsid complex (By similarity). Nucleocapsid protein p7 encapsulates and protects viral dimeric unspliced (genomic) RNA. Binds these RNAs through its zinc fingers (By similarity).[SAAS:SAAS012344_004_011858] | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
Check<jmol> | Check<jmol> | ||
<jmolCheckbox> | <jmolCheckbox> | ||
<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/dp/3dph_consurf.spt"</scriptWhenChecked> | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/dp/3dph_consurf.spt"</scriptWhenChecked> | ||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
<text>to colour the structure by Evolutionary Conservation</text> | <text>to colour the structure by Evolutionary Conservation</text> | ||
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</div> | </div> | ||
<div class="pdbe-citations 3dph" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 3dph" style="background-color:#fffaf0;"></div> | ||
==See Also== | |||
*[[Virus coat proteins 3D structures|Virus coat proteins 3D structures]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Large Structures]] | |||
[[Category: Igonet, S]] | [[Category: Igonet, S]] | ||
[[Category: Rey, F A]] | [[Category: Rey, F A]] | ||
Revision as of 22:26, 20 October 2021
HIV-1 capsid C-terminal domain mutant (L211S)HIV-1 capsid C-terminal domain mutant (L211S)
Structural highlights
Function[Q72497_9HIV1] Capsid protein p24 forms the conical core of the virus that encapsulates the genomic RNA-nucleocapsid complex (By similarity). Nucleocapsid protein p7 encapsulates and protects viral dimeric unspliced (genomic) RNA. Binds these RNAs through its zinc fingers (By similarity).[SAAS:SAAS012344_004_011858] Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedMorphogenesis of infectious HIV-1 involves budding of immature virions followed by proteolytic disassembly of the Gag protein shell and subsequent assembly of processed capsid proteins (CA) into the mature HIV-1 core. The dimeric interface between C-terminal domains of CA (C-CA) has been shown to be important for both immature and mature assemblies. We previously reported a CA-binding peptide (CAI) that blocks both assembly steps in vitro. The three-dimensional structure of the C-CA/CAI complex revealed an allosteric effect of CAI that alters the C-CA dimer interface. Based on this structure, we now investigated the phenotypes of mutations in the binding pocket. CA variants carrying mutations Y169A, L211A, or L211S had a reduced affinity for CAI and were unable to form mature-like particles in vitro. These mutations also blocked morphological conversion to mature virions in tissue culture and abolished infectivity. X-ray crystallographic analyses of the variant C-CA domains revealed that these alterations induced the same allosteric change at the dimer interface observed in the C-CA/CAI complex. These results point to a role of key interactions between conserved amino acids in the CAI binding pocket of C-CA in maintaining the correct conformation necessary for mature core assembly. Residues in the HIV-1 capsid assembly inhibitor binding site are essential for maintaining the assembly-competent quaternary structure of the capsid protein.,Bartonova V, Igonet S, Sticht J, Glass B, Habermann A, Vaney MC, Sehr P, Lewis J, Rey FA, Krausslich HG J Biol Chem. 2008 Nov 14;283(46):32024-33. Epub 2008 Sep 4. PMID:18772135[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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