1qze

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[[Image:1qze.gif|left|200px]]
 
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==HHR23a protein structure based on residual dipolar coupling data==
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The line below this paragraph, containing "STRUCTURE_1qze", creates the "Structure Box" on the page.
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<StructureSection load='1qze' size='340' side='right'caption='[[1qze]]' 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'>[[1qze]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QZE OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1QZE 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">Solution NMR</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=1qze FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qze OCA], [https://pdbe.org/1qze PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1qze RCSB], [https://www.ebi.ac.uk/pdbsum/1qze PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1qze ProSAT]</span></td></tr>
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{{STRUCTURE_1qze| PDB=1qze | SCENE= }}
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/RD23A_HUMAN RD23A_HUMAN] Multiubiquitin chain receptor involved in modulation of proteasomal degradation. Binds to 'Lys-48'-linked polyubiquitin chains in a length-dependent manner and with a lower affinity to 'Lys-63'-linked polyubiquitin chains. Proposed to be capable to bind simultaneously to the 26S proteasome and to polyubiquitinated substrates and to deliver ubiquitinated proteins to the proteasome.<ref>PMID:9372924</ref> <ref>PMID:14621999</ref> <ref>PMID:12643283</ref> <ref>PMID:15321727</ref> <ref>PMID:20614012</ref> Involved in nucleotide excision repair and is thought to be functional equivalent for RAD23B in global genome nucleotide excision repair (GG-NER) by association with XPC. In vitro, the XPC:RAD23A dimer has NER activity. Can stabilize XPC.<ref>PMID:9372924</ref> <ref>PMID:14621999</ref> <ref>PMID:12643283</ref> <ref>PMID:15321727</ref> <ref>PMID:20614012</ref> Involved in vpr-dependent replication of HIV-1 in non-proliferating cells and primary macrophages. Required for the association of HIV-1 vpr with the host proteasome.<ref>PMID:9372924</ref> <ref>PMID:14621999</ref> <ref>PMID:12643283</ref> <ref>PMID:15321727</ref> <ref>PMID:20614012</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/qz/1qze_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=1qze 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 Rad23 family of proteins, including the human homologs hHR23a and hHR23b, stimulates nucleotide excision repair and has been shown to provide a novel link between proteasome-mediated protein degradation and DNA repair. In this work, we illustrate how the proteasomal subunit S5a regulates hHR23a protein structure. By using NMR spectroscopy, we have elucidated the structure and dynamic properties of the 40-kDa hHR23a protein and show it to contain four structured domains connected by flexible linker regions. In addition, we reveal that these domains interact in an intramolecular fashion, and by using residual dipolar coupling data in combination with chemical shift perturbation analysis, we present the hHR23a structure. By itself, hHR23a adopts a closed conformation defined by the interaction of an N-terminal ubiquitin-like domain with two ubiquitin-associated domains. Interestingly, binding of the proteasomal subunit S5a disrupts the hHR23a interdomain interactions and thereby causes it to adopt an opened conformation.
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'''HHR23a protein structure based on residual dipolar coupling data'''
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DNA-repair protein hHR23a alters its protein structure upon binding proteasomal subunit S5a.,Walters KJ, Lech PJ, Goh AM, Wang Q, Howley PM Proc Natl Acad Sci U S A. 2003 Oct 28;100(22):12694-9. Epub 2003 Oct 13. PMID:14557549<ref>PMID:14557549</ref>
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==Overview==
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The Rad23 family of proteins, including the human homologs hHR23a and hHR23b, stimulates nucleotide excision repair and has been shown to provide a novel link between proteasome-mediated protein degradation and DNA repair. In this work, we illustrate how the proteasomal subunit S5a regulates hHR23a protein structure. By using NMR spectroscopy, we have elucidated the structure and dynamic properties of the 40-kDa hHR23a protein and show it to contain four structured domains connected by flexible linker regions. In addition, we reveal that these domains interact in an intramolecular fashion, and by using residual dipolar coupling data in combination with chemical shift perturbation analysis, we present the hHR23a structure. By itself, hHR23a adopts a closed conformation defined by the interaction of an N-terminal ubiquitin-like domain with two ubiquitin-associated domains. Interestingly, binding of the proteasomal subunit S5a disrupts the hHR23a interdomain interactions and thereby causes it to adopt an opened conformation.
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==About this Structure==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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1QZE is a [[Single protein]] structure of sequence 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=1QZE OCA].
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</div>
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<div class="pdbe-citations 1qze" style="background-color:#fffaf0;"></div>
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==Reference==
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==See Also==
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DNA-repair protein hHR23a alters its protein structure upon binding proteasomal subunit S5a., Walters KJ, Lech PJ, Goh AM, Wang Q, Howley PM, Proc Natl Acad Sci U S A. 2003 Oct 28;100(22):12694-9. Epub 2003 Oct 13. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/14557549 14557549]
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*[[UV excision repair protein 3D structures|UV excision repair protein 3D structures]]
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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: Single protein]]
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[[Category: Large Structures]]
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[[Category: Goh, A M.]]
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[[Category: Goh AM]]
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[[Category: Howley, P M.]]
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[[Category: Howley PM]]
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[[Category: Lech, P J.]]
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[[Category: Lech PJ]]
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[[Category: Walters, K J.]]
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[[Category: Walters KJ]]
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[[Category: Wang, Q.]]
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[[Category: Wang Q]]
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[[Category: Dna repair]]
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[[Category: Proteasome-mediated degradation]]
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[[Category: Protein-protein interaction]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 06:53:33 2008''
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Current revision

HHR23a protein structure based on residual dipolar coupling data

PDB ID 1qze

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