6fhs: Difference between revisions

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-'''Unreleased structure'''
-The entry 6fhs is ON HOLD
+==CryoEM Structure of INO80core==
+<SX load='6fhs' size='340' side='right' viewer='molstar' caption='[[6fhs]], [[Resolution|resolution]] 3.75&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[6fhs]] is a 10 chain structure with sequence from [http://en.wikipedia.org/wiki/Chatd Chatd]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6FHS OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=6FHS FirstGlance]. <br>
+</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=ATP:ADENOSINE-5-TRIPHOSPHATE'>ATP</scene></td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CTHT_0006820 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=759272 CHATD]), CTHT_0006170 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=759272 CHATD]), CTHT_0004910 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=759272 CHATD]), CTHT_0032670 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=759272 CHATD]), CTHT_0032660 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=759272 CHATD])</td></tr>
+<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/DNA_helicase DNA helicase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.6.4.12 3.6.4.12] </span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=6fhs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6fhs OCA], [http://pdbe.org/6fhs PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6fhs RCSB], [http://www.ebi.ac.uk/pdbsum/6fhs PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6fhs ProSAT]</span></td></tr>
+</table>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+In the eukaryotic nucleus, DNA is packaged in the form of nucleosomes, each of which comprises about 147 base pairs of DNA wrapped around a histone protein octamer. The position and histone composition of nucleosomes is governed by ATP-dependent chromatin remodellers(1-3) such as the 15-subunit INO80 complex (4) . INO80 regulates gene expression, DNA repair and replication by sliding nucleosomes, the exchange of histone H2A.Z with H2A, and the positioning of + 1 and -1 nucleosomes at promoter DNA(5-8). The structures and mechanisms of these remodelling reactions are currently unknown. Here we report the cryo-electron microscopy structure of the evolutionarily conserved core of the INO80 complex from the fungus Chaetomium thermophilum bound to a nucleosome, at a global resolution of 4.3 A and with major parts at 3.7 A. The INO80 core cradles one entire gyre of the nucleosome through multivalent DNA and histone contacts. An Rvb1/Rvb2 AAA(+) ATPase heterohexamer is an assembly scaffold for the complex and acts as a 'stator' for the motor and nucleosome-gripping subunits. The Swi2/Snf2 ATPase motor binds to nucleosomal DNA at superhelical location -6, unwraps approximately 15 base pairs, disrupts the H2A-DNA contacts and is poised to pump entry DNA into the nucleosome. Arp5 and Ies6 bind superhelical locations -2 and -3 to act as a counter grip for the motor, on the other side of the H2A-H2B dimer. The Arp5 insertion domain forms a grappler element that binds the nucleosome dyad, connects the Arp5 actin-fold and entry DNA over a distance of about 90 A and packs against histone H2A-H2B near the 'acidic patch'. Our structure together with biochemical data (8) suggests a unified mechanism for nucleosome sliding and histone editing by INO80. The motor is part of a macromolecular ratchet, persistently pumping entry DNA across the H2A-H2B dimer against the Arp5 grip until a large nucleosome translocation step occurs. The transient exposure of H2A-H2B by motor activity as well as differential recognition of H2A.Z and H2A may regulate histone exchange.
-Authors:
+Structural basis for ATP-dependent chromatin remodelling by the INO80 complex.,Eustermann S, Schall K, Kostrewa D, Lakomek K, Strauss M, Moldt M, Hopfner KP Nature. 2018 Apr;556(7701):386-390. doi: 10.1038/s41586-018-0029-y. Epub 2018 Apr, 11. PMID:29643509<ref>PMID:29643509</ref>
-Description:
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-[[Category: Unreleased Structures]]
+</div>
+<div class="pdbe-citations 6fhs" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Helicase 3D structures|Helicase 3D structures]]
+== References ==
+<references/>
+__TOC__
+</SX>
+[[Category: Chatd]]
+[[Category: DNA helicase]]
+[[Category: Large Structures]]
+[[Category: Eustermann, S]]
+[[Category: Hopfner, K]]
+[[Category: Kostrewa, D]]
+[[Category: Schall, K]]
+[[Category: Strauss, M]]
+[[Category: Dna binding protein]]