9nfw: Difference between revisions

From Proteopedia
Jump to navigationJump to search
← Older edit
OCA (talk | contribs)
Bots, Bureaucrats, journal, Administrators
3,331,613 edits
No edit summary
OCA (talk | contribs)
Bots, Bureaucrats, journal, Administrators
3,331,613 edits
No edit summary
 
Line 1: Line 1:
'''Unreleased structure'''


The entry 9nfw is ON HOLD  until Paper Publication
==Human SRCAP-CFDP1-nucleosome complex in the activated state of the H2A.Z histone exchange reaction (composite structure)==
<StructureSection load='9nfw' size='340' side='right'caption='[[9nfw]], [[Resolution|resolution]] 3.80&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[9nfw]] is a 15 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens], [https://en.wikipedia.org/wiki/Xenopus_laevis Xenopus laevis] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=9NFW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=9NFW FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 3.8&#8491;</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>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=9nfw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=9nfw OCA], [https://pdbe.org/9nfw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=9nfw RCSB], [https://www.ebi.ac.uk/pdbsum/9nfw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=9nfw ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/RUVB1_HUMAN RUVB1_HUMAN] Possesses single-stranded DNA-stimulated ATPase and ATP-dependent DNA helicase (3' to 5') activity; hexamerization is thought to be critical for ATP hydrolysis and adjacent subunits in the ring-like structure contribute to the ATPase activity.<ref>PMID:11027681</ref> <ref>PMID:14506706</ref> <ref>PMID:11080158</ref> <ref>PMID:14695187</ref> <ref>PMID:14966270</ref>  Component of the NuA4 histone acetyltransferase complex which is involved in transcriptional activation of select genes principally by acetylation of nucleosomal histones H4 and H2A. This modification may both alter nucleosome - DNA interactions and promote interaction of the modified histones with other proteins which positively regulate transcription. This complex may be required for the activation of transcriptional programs associated with oncogene and proto-oncogene mediated growth induction, tumor suppressor mediated growth arrest and replicative senescence, apoptosis, and DNA repair. The NuA4 complex ATPase and helicase activities seem to be, at least in part, contributed by the association of RUVBL1 and RUVBL2 with EP400. NuA4 may also play a direct role in DNA repair when recruited to sites of DNA damage.<ref>PMID:11027681</ref> <ref>PMID:14506706</ref> <ref>PMID:11080158</ref> <ref>PMID:14695187</ref> <ref>PMID:14966270</ref>  Proposed core component of the chromatin remodeling INO80 complex which is involved in transcriptional regulation, DNA replication and probably DNA repair.<ref>PMID:11027681</ref> <ref>PMID:14506706</ref> <ref>PMID:11080158</ref> <ref>PMID:14695187</ref> <ref>PMID:14966270</ref>  Plays an essential role in oncogenic transformation by MYC and also modulates transcriptional activation by the LEF1/TCF1-CTNNB1 complex. Essential for cell proliferation.<ref>PMID:11027681</ref> <ref>PMID:14506706</ref> <ref>PMID:11080158</ref> <ref>PMID:14695187</ref> <ref>PMID:14966270</ref>  May be able to bind plasminogen at cell surface and enhance plasminogen activation.<ref>PMID:11027681</ref> <ref>PMID:14506706</ref> <ref>PMID:11080158</ref> <ref>PMID:14695187</ref> <ref>PMID:14966270</ref>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The conserved yeast SWR1 and human SRCAP chromatin remodeling complexes catalyze exchange of nucleosomal histone H2A for H2A.Z, but the underlying mechanism has remained obscure. Here, we show that histone exchange by SRCAP requires the transient activator CFDP1 and resolve nine cryo-electron microscopy structures of the SRCAP-CFDP1 holoenzyme that define the stepwise exchange mechanism. CFDP1 recognizes the conformation of the fully engaged SRCAP-nucleosome complex through interactions with multiple subunits-including direct contact with the ATPase domain-and induces conformational transitions that drive extensive DNA unwrapping, eviction of the H2A-H2B dimer, and insertion of the H2A.Z-H2B dimer, all without necessarily requiring hydrolysis of bound ATP. Collectively, these findings provide unprecedented insight into the mechanism of activator- and nucleotide-driven histone exchange from nucleosomal H2A to H2A.Z.


Authors:  
Structural mechanism of histone H2A.Z exchange by human SRCAP-CFDP1 holoenzyme.,Park G, Wu C, Louder RK Sci Adv. 2026 Jul 31;12(31):eaei7728. doi: 10.1126/sciadv.aei7728. Epub 2026 Jul , 31. PMID:42536744<ref>PMID:42536744</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 9nfw" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Synthetic construct]]
[[Category: Xenopus laevis]]
[[Category: Louder RK]]
[[Category: Park G]]
Retrieved from "https://proteopedia.org/9nfw"