3lqa

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==Crystal structure of clade C gp120 in complex with sCD4 and 21c Fab==
==Crystal structure of clade C gp120 in complex with sCD4 and 21c Fab==
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<StructureSection load='3lqa' size='340' side='right' caption='[[3lqa]], [[Resolution|resolution]] 3.40&Aring;' scene=''>
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<StructureSection load='3lqa' size='340' side='right'caption='[[3lqa]], [[Resolution|resolution]] 3.40&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[3lqa]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [http://en.wikipedia.org/wiki/Human_immunodeficiency_virus_1 Human immunodeficiency virus 1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3LQA OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3LQA FirstGlance]. <br>
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<table><tr><td colspan='2'>[[3lqa]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Human_immunodeficiency_virus_1 Human immunodeficiency virus 1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3LQA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3LQA FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.4&#8491;</td></tr>
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<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3lmj|3lmj]]</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CD4 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]), env ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=11676 Human immunodeficiency virus 1])</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3lqa FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3lqa OCA], [https://pdbe.org/3lqa PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3lqa RCSB], [https://www.ebi.ac.uk/pdbsum/3lqa PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3lqa ProSAT]</span></td></tr>
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<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=3lqa FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3lqa OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3lqa RCSB], [http://www.ebi.ac.uk/pdbsum/3lqa PDBsum]</span></td></tr>
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</table>
</table>
== Function ==
== Function ==
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[[http://www.uniprot.org/uniprot/CD4_HUMAN CD4_HUMAN]] Accessory protein for MHC class-II antigen/T-cell receptor interaction. May regulate T-cell activation. Induces the aggregation of lipid rafts. [[http://www.uniprot.org/uniprot/Q1PHM6_9HIV1 Q1PHM6_9HIV1]] The envelope glyprotein gp160 precursor down-modulates cell surface CD4 antigen by interacting with it in the endoplasmic reticulum and blocking its transport to the cell surface (By similarity).[SAAS:SAAS000328_004_020447][RuleBase:RU004292] The gp120-gp41 heterodimer allows rapid transcytosis of the virus through CD4 negative cells such as simple epithelial monolayers of the intestinal, rectal and endocervical epithelial barriers. Both gp120 and gp41 specifically recognize glycosphingolipids galactosyl-ceramide (GalCer) or 3' sulfo-galactosyl-ceramide (GalS) present in the lipid rafts structures of epithelial cells. Binding to these alternative receptors allows the rapid transcytosis of the virus through the epithelial cells. This transcytotic vesicle-mediated transport of virions from the apical side to the basolateral side of the epithelial cells does not involve infection of the cells themselves (By similarity).
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[https://www.uniprot.org/uniprot/CD4_HUMAN CD4_HUMAN] Accessory protein for MHC class-II antigen/T-cell receptor interaction. May regulate T-cell activation. Induces the aggregation of lipid rafts.
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
Check<jmol>
<jmolCheckbox>
<jmolCheckbox>
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<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/lq/3lqa_consurf.spt"</scriptWhenChecked>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/lq/3lqa_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
<text>to colour the structure by Evolutionary Conservation</text>
<text>to colour the structure by Evolutionary Conservation</text>
</jmolCheckbox>
</jmolCheckbox>
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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/chain_selection.php?pdb_ID=2ata ConSurf].
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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=3lqa ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
<div style="background-color:#fffaf0;">
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
</div>
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<div class="pdbe-citations 3lqa" style="background-color:#fffaf0;"></div>
==See Also==
==See Also==
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*[[Antibody|Antibody]]
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*[[Antibody 3D structures|Antibody 3D structures]]
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*[[CD4|CD4]]
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*[[CD4 3D structures|CD4 3D structures]]
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*[[Gp120 3D structures|Gp120 3D structures]]
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*[[3D structures of human antibody|3D structures of human antibody]]
== References ==
== References ==
<references/>
<references/>
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[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Human immunodeficiency virus 1]]
[[Category: Human immunodeficiency virus 1]]
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[[Category: Bjorkman, P J]]
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[[Category: Large Structures]]
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[[Category: Diskin, R]]
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[[Category: Bjorkman PJ]]
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[[Category: Marcovecchio, P M]]
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[[Category: Diskin R]]
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[[Category: Complex]]
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[[Category: Marcovecchio PM]]
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[[Category: Immune system]]
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[[Category: Poly reactivity]]
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Current revision

Crystal structure of clade C gp120 in complex with sCD4 and 21c Fab

PDB ID 3lqa

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