2fmm

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[[Image:2fmm.gif|left|200px]]<br /><applet load="2fmm" size="350" color="white" frame="true" align="right" spinBox="true"
 
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caption="2fmm, resolution 1.8&Aring;" />
 
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'''Crystal Structure of EMSY-HP1 complex'''<br />
 
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==Overview==
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==Crystal Structure of EMSY-HP1 complex==
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Heterochromatin protein-1 (HP1) plays an essential role in both the assembly of higher-order chromatin structure and epigenetic inheritance. The C-terminal chromo shadow domain (CSD) of HP1 is responsible for homodimerization and interaction with a number of chromatin-associated nonhistone proteins, including EMSY, which is a BRCA2-interacting protein that has been implicated in the development of breast and ovarian cancer. We have determined the crystal structure of the HP1beta CSD in complex with the N-terminal domain of EMSY at 1.8 A resolution. Surprisingly, the structure reveals that EMSY is bound by two HP1 CSD homodimers, and the binding sequences differ from the consensus HP1 binding motif PXVXL. This structural information expands our understanding of HP1 binding specificity and provides insights into interactions between HP1 homodimers that are likely to be important for heterochromatin formation.
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<StructureSection load='2fmm' size='340' side='right'caption='[[2fmm]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
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== Structural highlights ==
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==About this Structure==
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<table><tr><td colspan='2'>[[2fmm]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FMM OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2FMM FirstGlance]. <br>
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2FMM is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] with <scene name='pdbligand=SO4:'>SO4</scene> as [http://en.wikipedia.org/wiki/ligand ligand]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FMM OCA].
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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]] 1.8&#8491;</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=SO4:SULFATE+ION'>SO4</scene></td></tr>
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==Reference==
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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=2fmm FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fmm OCA], [https://pdbe.org/2fmm PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2fmm RCSB], [https://www.ebi.ac.uk/pdbsum/2fmm PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2fmm ProSAT]</span></td></tr>
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Crystal structure of the HP1-EMSY complex reveals an unusual mode of HP1 binding., Huang Y, Myers MP, Xu RM, Structure. 2006 Apr;14(4):703-12. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=16615912 16615912]
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/EMSY_HUMAN EMSY_HUMAN] Regulator which is able to repress transcription, possibly via its interaction with a multiprotein chromatin remodeling complex that modifies the chromatin. Its interaction with BRCA2 suggests that it may play a central role in the DNA repair function of BRCA2.<ref>PMID:14651845</ref>
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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/fm/2fmm_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/main_output.php?pdb_ID=2fmm ConSurf].
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<div style="clear:both"></div>
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== References ==
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<references/>
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__TOC__
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</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: Protein complex]]
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[[Category: Large Structures]]
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[[Category: Huang, Y.]]
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[[Category: Huang Y]]
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[[Category: SO4]]
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[[Category: chromo shadow domain]]
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[[Category: emsy protein]]
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[[Category: ent domain]]
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[[Category: heterochromatin protein 1]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 17:23:03 2008''
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Current revision

Crystal Structure of EMSY-HP1 complex

PDB ID 2fmm

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