3cd4

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[[Image:3cd4.png|left|200px]]
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==REFINEMENT AND ANALYSIS OF THE FIRST TWO DOMAINS OF HUMAN CD4==
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<StructureSection load='3cd4' size='340' side='right' caption='[[3cd4]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[3cd4]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=2cd4 2cd4]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3CD4 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3CD4 FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3cd4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3cd4 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3cd4 RCSB], [http://www.ebi.ac.uk/pdbsum/3cd4 PDBsum]</span></td></tr>
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<table>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/cd/3cd4_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</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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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The structure of a fragment of human CD4 containing two immunoglobulin (Ig)-like domains has been determined by X-ray crystallography and refined at 2.2 A resolution. The structure determination involved iterative building and simulated-annealing refinement, beginning with a partial model. Comparison of domain 1 with an Ig variable domain shows that CD4 has a long and prominent CDR2-like loop (the C"C" corner) and shortened CC' and FG loops (which mediate dimerization in IgV modules). Comparison of domain 2 with Ig modules and domain 1 shows that it can be described as a truncated Ig V domain, in which strands C" and D are deleted. The intersheet disulfide in domain 2 is absent, and there is an altered packing of the two beta-sheets together with a remodeling of the hydrophobic core. The interface between domains 1 and 2 is a lap joint with an extensive hydrophobic surface. The key features of domain 1 that contribute to the interface are found at corresponding positions in domain 2, leading us to propose that the contact between domains 2 and 3 will resemble the one between domains 1 and 2.
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{{STRUCTURE_3cd4| PDB=3cd4 | SCENE= }}
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Refinement and analysis of the structure of the first two domains of human CD4.,Garrett TP, Wang J, Yan Y, Liu J, Harrison SC J Mol Biol. 1993 Dec 5;234(3):763-78. PMID:8254672<ref>PMID:8254672</ref>
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===REFINEMENT AND ANALYSIS OF THE FIRST TWO DOMAINS OF HUMAN CD4===
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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{{ABSTRACT_PUBMED_8254672}}
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==See Also==
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*[[CD4|CD4]]
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==About this Structure==
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== References ==
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[[3cd4]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=2cd4 2cd4]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3CD4 OCA].
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<references/>
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__TOC__
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==Reference==
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</StructureSection>
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<ref group="xtra">PMID:008254672</ref><ref group="xtra">PMID:012215419</ref><references group="xtra"/>
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[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Garrett, T P.J.]]
[[Category: Garrett, T P.J.]]

Revision as of 21:14, 2 October 2014

REFINEMENT AND ANALYSIS OF THE FIRST TWO DOMAINS OF HUMAN CD4

3cd4, resolution 2.20Å

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