2hyi

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[[Image:2hyi.gif|left|200px]]
 
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==Structure of the human exon junction complex with a trapped DEAD-box helicase bound to RNA==
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The line below this paragraph, containing "STRUCTURE_2hyi", creates the "Structure Box" on the page.
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<StructureSection load='2hyi' size='340' side='right'caption='[[2hyi]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[2hyi]] is a 10 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=2HYI OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2HYI FirstGlance]. <br>
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or leave the SCENE parameter empty for the default display.
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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]] 2.3&#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=ANP:PHOSPHOAMINOPHOSPHONIC+ACID-ADENYLATE+ESTER'>ANP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
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{{STRUCTURE_2hyi| PDB=2hyi | SCENE= }}
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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=2hyi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2hyi OCA], [https://pdbe.org/2hyi PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2hyi RCSB], [https://www.ebi.ac.uk/pdbsum/2hyi PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2hyi ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/MGN_HUMAN MGN_HUMAN] Component of a splicing-dependent multiprotein exon junction complex (EJC) deposited at splice junction on mRNAs. The EJC is a dynamic structure consisting of a few core proteins and several more peripheral nuclear and cytoplasmic associated factors that join the complex only transiently either during EJC assembly or during subsequent mRNA metabolism. Core components of the EJC, that remains bound to spliced mRNAs throughout all stages of mRNA metabolism, functions to mark the position of the exon-exon junction in the mature mRNA and thereby influences downstream processes of gene expression including mRNA splicing, nuclear mRNA export, subcellular mRNA localization, translation efficiency and nonsense-mediated mRNA decay (NMD). Remains associated with the mRNA after its export to the cytoplasm and require translation of the mRNA for removal. The heterodimer MAGOH-RBM8A interacts with PYM that function to enhance the translation of EJC-bearing spliced mRNAs by recruiting them to the ribosomal 48S preinitiation complex.<ref>PMID:12730685</ref> <ref>PMID:16209946</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/hy/2hyi_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=2hyi ConSurf].
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<div style="clear:both"></div>
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'''Structure of the human exon junction complex with a trapped DEAD-box helicase bound to RNA'''
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==See Also==
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*[[Helicase 3D structures|Helicase 3D structures]]
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== References ==
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==Overview==
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<references/>
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In higher eukaryotes, a multiprotein exon junction complex is deposited on spliced messenger RNAs. The complex is organized around a stable core, which serves as a binding platform for numerous factors that influence messenger RNA function. Here, we present the crystal structure of a tetrameric exon junction core complex containing the DEAD-box adenosine triphosphatase (ATPase) eukaryotic initiation factor 4AIII (eIF4AIII) bound to an ATP analog, MAGOH, Y14, a fragment of MLN51, and a polyuracil mRNA mimic. eIF4AIII interacts with the phosphate-ribose backbone of six consecutive nucleotides and prevents part of the bound RNA from being double stranded. The MAGOH and Y14 subunits lock eIF4AIII in a prehydrolysis state, and activation of the ATPase probably requires only modest conformational changes in eIF4AIII motif I.
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__TOC__
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</StructureSection>
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==About this Structure==
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2HYI is a [[Protein complex]] structure of sequences 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=2HYI OCA].
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==Reference==
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Structure of the exon junction core complex with a trapped DEAD-box ATPase bound to RNA., Andersen CB, Ballut L, Johansen JS, Chamieh H, Nielsen KH, Oliveira CL, Pedersen JS, Seraphin B, Le Hir H, Andersen GR, Science. 2006 Sep 29;313(5795):1968-72. Epub 2006 Aug 24. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16931718 16931718]
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[[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: Andersen, C B.F.]]
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[[Category: Andersen CBF]]
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[[Category: Andersen, G R.]]
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[[Category: Andersen GR]]
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[[Category: Hir, H Le.]]
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[[Category: Le Hir H]]
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[[Category: Dead-box atpase]]
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[[Category: Exon junction]]
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[[Category: Mrna processing]]
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[[Category: Nonsense mediated decay]]
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[[Category: Splicing]]
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[[Category: Translation]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 06:52:02 2008''
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Current revision

Structure of the human exon junction complex with a trapped DEAD-box helicase bound to RNA

PDB ID 2hyi

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