3obx: Difference between revisions
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[[ | ==Crystal structure of the Tsg101 UEV domain in complex with a HIV-1 Gag P7A mutant peptide== | ||
<StructureSection load='3obx' size='340' side='right' caption='[[3obx]], [[Resolution|resolution]] 1.60Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[3obx]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3OBX OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3OBX FirstGlance]. <br> | |||
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3obu|3obu]], [[3obq|3obq]], [[3obs|3obs]]</td></tr> | |||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">TSG101 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3obx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3obx OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3obx RCSB], [http://www.ebi.ac.uk/pdbsum/3obx PDBsum]</span></td></tr> | |||
</table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Budding of HIV-1 requires the binding of the PTAP late domain of the Gag p6 protein to the UEV domain of the TSG101 subunit of ESCRT-I. The normal function of this motif in cells is in receptor downregulation. Here, we report the 1.4-1.6 A structures of the human TSG101 UEV domain alone and with wild-type and mutant HIV-1 PTAP and Hrs PSAP nonapeptides. The hydroxyl of the Thr or Ser residue in the P(S/T)AP motif hydrogen bonds with the main chain of Asn69. Mutation of the Asn to Pro, blocking the main-chain amide, abrogates PTAP motif binding in vitro and blocks budding of HIV-1 from cells. N69P and other PTAP binding-deficient alleles of TSG101 did not rescue HIV-1 budding. However, the mutant alleles did rescue downregulation of endogenous EGF receptor. This demonstrates that the PSAP motif is not rate determining in EGF receptor downregulation under normal conditions. | |||
Crystallographic and functional analysis of the ESCRT-I /HIV-1 Gag PTAP interaction.,Im YJ, Kuo L, Ren X, Burgos PV, Zhao XZ, Liu F, Burke TR Jr, Bonifacino JS, Freed EO, Hurley JH Structure. 2010 Nov 10;18(11):1536-47. PMID:21070952<ref>PMID:21070952</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
==See Also== | ==See Also== | ||
*[[Gag polyprotein|Gag polyprotein]] | *[[Gag polyprotein|Gag polyprotein]] | ||
== References == | |||
== | <references/> | ||
< | __TOC__ | ||
</StructureSection> | |||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Hurley, J H | [[Category: Hurley, J H]] | ||
[[Category: Im, Y J | [[Category: Im, Y J]] | ||
[[Category: Hiv-1 gag]] | [[Category: Hiv-1 gag]] | ||
[[Category: Protein tranport]] | [[Category: Protein tranport]] | ||
[[Category: Protein transport]] | [[Category: Protein transport]] | ||
[[Category: Ubiquitin]] | [[Category: Ubiquitin]] | ||
