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| | ==Nucleosome disassembly by RSC and SWI/SNF is enhanced by H3 acetylation near the nucleosome dyad axis== | | ==Nucleosome disassembly by RSC and SWI/SNF is enhanced by H3 acetylation near the nucleosome dyad axis== |
| - | <StructureSection load='4z66' size='340' side='right' caption='[[4z66]], [[Resolution|resolution]] 2.50Å' scene=''> | + | <StructureSection load='4z66' size='340' side='right'caption='[[4z66]], [[Resolution|resolution]] 2.50Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4z66]] is a 10 chain structure with sequence from [http://en.wikipedia.org/wiki/African_clawed_frog African clawed frog]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4Z66 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4Z66 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4z66]] is a 10 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Xenopus_laevis Xenopus laevis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4Z66 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4Z66 FirstGlance]. <br> |
| - | </td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=ALY:N(6)-ACETYLLYSINE'>ALY</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.5Å</td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">hist1h2aj, LOC494591 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=8355 African clawed frog])</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ALY:N(6)-ACETYLLYSINE'>ALY</scene></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4z66 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4z66 OCA], [http://pdbe.org/4z66 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4z66 RCSB], [http://www.ebi.ac.uk/pdbsum/4z66 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4z66 ProSAT]</span></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=4z66 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4z66 OCA], [https://pdbe.org/4z66 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4z66 RCSB], [https://www.ebi.ac.uk/pdbsum/4z66 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4z66 ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/H2B11_XENLA H2B11_XENLA]] Core component of nucleosome. Nucleosomes wrap and compact DNA into chromatin, limiting DNA accessibility to the cellular machineries which require DNA as a template. Histones thereby play a central role in transcription regulation, DNA repair, DNA replication and chromosomal stability. DNA accessibility is regulated via a complex set of post-translational modifications of histones, also called histone code, and nucleosome remodeling. [[http://www.uniprot.org/uniprot/H32_XENLA H32_XENLA]] Core component of nucleosome. Nucleosomes wrap and compact DNA into chromatin, limiting DNA accessibility to the cellular machineries which require DNA as a template. Histones thereby play a central role in transcription regulation, DNA repair, DNA replication and chromosomal stability. DNA accessibility is regulated via a complex set of post-translational modifications of histones, also called histone code, and nucleosome remodeling. [[http://www.uniprot.org/uniprot/H4_XENLA H4_XENLA]] Core component of nucleosome. Nucleosomes wrap and compact DNA into chromatin, limiting DNA accessibility to the cellular machineries which require DNA as a template. Histones thereby play a central role in transcription regulation, DNA repair, DNA replication and chromosomal stability. DNA accessibility is regulated via a complex set of post-translational modifications of histones, also called histone code, and nucleosome remodeling. | + | [https://www.uniprot.org/uniprot/H32_XENLA H32_XENLA] Core component of nucleosome. Nucleosomes wrap and compact DNA into chromatin, limiting DNA accessibility to the cellular machineries which require DNA as a template. Histones thereby play a central role in transcription regulation, DNA repair, DNA replication and chromosomal stability. DNA accessibility is regulated via a complex set of post-translational modifications of histones, also called histone code, and nucleosome remodeling. |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | </div> | | </div> |
| | <div class="pdbe-citations 4z66" style="background-color:#fffaf0;"></div> | | <div class="pdbe-citations 4z66" style="background-color:#fffaf0;"></div> |
| | + | |
| | + | ==See Also== |
| | + | *[[Histone 3D structures|Histone 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: African clawed frog]] | + | [[Category: Homo sapiens]] |
| - | [[Category: Bartholomew, B]] | + | [[Category: Large Structures]] |
| - | [[Category: Chatterjee, N]] | + | [[Category: Xenopus laevis]] |
| - | [[Category: Dechassa, M L]] | + | [[Category: Bartholomew B]] |
| - | [[Category: Luger, K]] | + | [[Category: Chatterjee N]] |
| - | [[Category: Manohar, M]] | + | [[Category: Dechassa ML]] |
| - | [[Category: North, J A]] | + | [[Category: Luger K]] |
| - | [[Category: Ottessen, J J]] | + | [[Category: Manohar M]] |
| - | [[Category: Poirier, M G]] | + | [[Category: North JA]] |
| - | [[Category: Prasad, R]] | + | [[Category: Ottessen JJ]] |
| - | [[Category: Dyad axis]]
| + | [[Category: Poirier MG]] |
| - | [[Category: Structural protein-dna complex]]
| + | [[Category: Prasad R]] |
| Structural highlights
Function
H32_XENLA Core component of nucleosome. Nucleosomes wrap and compact DNA into chromatin, limiting DNA accessibility to the cellular machineries which require DNA as a template. Histones thereby play a central role in transcription regulation, DNA repair, DNA replication and chromosomal stability. DNA accessibility is regulated via a complex set of post-translational modifications of histones, also called histone code, and nucleosome remodeling.
Publication Abstract from PubMed
Signaling associated with transcription activation occurs through post-translational modification of histones and is best exemplified by lysine acetylation. Lysines are acetylated in histone tails and the core domain / lateral surface of histone octamers. While acetylated lysines in histone tails are frequently recognized by other factors referred to as "readers" that promote transcription, the mechanistic role of the modifications in the lateral surface of the histone octamer remain unclear. Using x-ray crystallography, we show that acetylated lysines 115 and 122 in histone H3 are solvent-accessible, but in biochemical assays appear not to interact with the bromodomains of SWI/SNF and RSC to enhance recruitment or nucleosome mobilization as was previously shown for acetylated lysines in H3 histone tails. Instead we find that acetylation of lysines 115 and 122 increases the predisposition of nucleosomes for disassembly by SWI/SNF and RSC up to seven-fold, independent of bromodomains, and only in conjunction with contiguous nucleosomes. Thus, in combination with SWI/SNF and RSC, acetylation of lateral surface lysines in the histone octamer serve as crucial regulators of nucleosomal dynamics distinct from the histone code readers and writers.
Histone acetylation near the nucleosome dyad axis enhances nucleosome disassembly by RSC and SWI/SNF.,Chatterjee N, North JA, Dechassa ML, Manohar M, Prasad R, Luger K, Ottesen JJ, Poirier MG, Bartholomew B Mol Cell Biol. 2015 Sep 28. pii: MCB.00441-15. PMID:26416878[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Chatterjee N, North JA, Dechassa ML, Manohar M, Prasad R, Luger K, Ottesen JJ, Poirier MG, Bartholomew B. Histone acetylation near the nucleosome dyad axis enhances nucleosome disassembly by RSC and SWI/SNF. Mol Cell Biol. 2015 Sep 28. pii: MCB.00441-15. PMID:26416878 doi:http://dx.doi.org/10.1128/MCB.00441-15
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