2hos

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[[Image:2hos.png|left|200px]]
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==Phage-Selected Homeodomain Bound to Unmodified DNA==
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<StructureSection load='2hos' size='340' side='right' caption='[[2hos]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[2hos]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Drosophila_melanogaster Drosophila melanogaster]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2HOS OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2HOS FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=3MO:3-METHYL-1,3-OXAZOLIDIN-2-ONE'>3MO</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene><br>
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<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2hdd|2hdd]], [[2hot|2hot]]</td></tr>
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<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">en ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=7227 Drosophila melanogaster])</td></tr>
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<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=2hos FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2hos OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2hos RCSB], [http://www.ebi.ac.uk/pdbsum/2hos 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/ho/2hos_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 homeodomain (HD)-DNA interface has been conserved over 500 million years of evolution. Despite this conservation, we have successfully re-engineered the engrailed HD to specifically recognize an unnatural nucleotide using a phage display selection. Here we report the synthesis of novel nucleosides and the selection of mutant HDs that bind these nucleotides using phage display. The high-resolution crystal structure of one mutant in complex with modified and unmodified DNA demonstrates that, even with the substantial perturbation to the interface, this selected mutant retains a canonical HD structure. Dissection of the contributions due to each of the selected mutations reveals that the majority of the modification-specific binding is accomplished by a single mutation (I47G) but that the remaining mutations retune the stability of the HD. These results afford a detailed look at a re-engineered protein-DNA interaction and provide insight into the opportunities for re-engineering highly conserved interfaces.
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{{STRUCTURE_2hos| PDB=2hos | SCENE= }}
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Structure and properties of a re-engineered homeodomain protein-DNA interface.,Simon MD, Feldman ME, Rauh D, Maris AE, Wemmer DE, Shokat KM ACS Chem Biol. 2006 Dec 15;1(12):755-60. PMID:17240973<ref>PMID:17240973</ref>
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===Phage-Selected Homeodomain Bound to Unmodified DNA===
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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_17240973}}
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== References ==
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<references/>
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==About this Structure==
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__TOC__
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[[2hos]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Drosophila_melanogaster Drosophila melanogaster]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2HOS OCA].
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</StructureSection>
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==Reference==
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<ref group="xtra">PMID:017240973</ref><references group="xtra"/>
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[[Category: Drosophila melanogaster]]
[[Category: Drosophila melanogaster]]
[[Category: Feldman, M E.]]
[[Category: Feldman, M E.]]

Revision as of 07:52, 30 September 2014

Phage-Selected Homeodomain Bound to Unmodified DNA

2hos, resolution 1.90Å

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