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| | <StructureSection load='5nl0' size='340' side='right'caption='[[5nl0]], [[Resolution|resolution]] 5.40Å' scene=''> | | <StructureSection load='5nl0' size='340' side='right'caption='[[5nl0]], [[Resolution|resolution]] 5.40Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[5nl0]] is a 17 chain structure with sequence from [http://en.wikipedia.org/wiki/ ] and [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=5NL0 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=5NL0 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[5nl0]] is a 17 chain structure with sequence from [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=5NL0 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5NL0 FirstGlance]. <br> |
| - | </td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">h1f0-b ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=8355 African clawed frog])</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]] 5.4Å</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=5nl0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5nl0 OCA], [http://pdbe.org/5nl0 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5nl0 RCSB], [http://www.ebi.ac.uk/pdbsum/5nl0 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5nl0 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=5nl0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5nl0 OCA], [https://pdbe.org/5nl0 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5nl0 RCSB], [https://www.ebi.ac.uk/pdbsum/5nl0 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5nl0 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/H2A1_XENLA H2A1_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/H10B_XENLA H10B_XENLA]] Histones H1 are necessary for the condensation of nucleosome chains into higher-order structures. The H1F0 histones are found in cells that are in terminal stages of differentiation or that have low rates of cell division (By similarity). [[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/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. |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: African clawed frog]] | |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Dimitrov, S]] | + | [[Category: Synthetic construct]] |
| - | [[Category: Garcia-Saez, I]] | + | [[Category: Xenopus laevis]] |
| - | [[Category: Petosa, C]] | + | [[Category: Dimitrov S]] |
| - | [[Category: Chromatin]] | + | [[Category: Garcia-Saez I]] |
| - | [[Category: Chromatin binding protein - dna complex]]
| + | [[Category: Petosa C]] |
| - | [[Category: Chromatin binding protein / dna]] | + | |
| - | [[Category: Histone h1]]
| + | |
| - | [[Category: Linker histone]]
| + | |
| - | [[Category: Nucleosome]]
| + | |
| Structural highlights
Function
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.
Publication Abstract from PubMed
Linker histones associate with nucleosomes to promote the formation of higher-order chromatin structure, but the underlying molecular details are unclear. We investigated the structure of a 197 bp nucleosome bearing symmetric 25 bp linker DNA arms in complex with vertebrate linker histone H1. We determined electron cryo-microscopy (cryo-EM) and crystal structures of unbound and H1-bound nucleosomes and validated these structures by site-directed protein cross-linking and hydroxyl radical footprinting experiments. Histone H1 shifts the conformational landscape of the nucleosome by drawing the two linkers together and reducing their flexibility. The H1 C-terminal domain (CTD) localizes primarily to a single linker, while the H1 globular domain contacts the nucleosome dyad and both linkers, associating more closely with the CTD-distal linker. These findings reveal that H1 imparts a strong degree of asymmetry to the nucleosome, which is likely to influence the assembly and architecture of higher-order structures.
Structure and Dynamics of a 197 bp Nucleosome in Complex with Linker Histone H1.,Bednar J, Garcia-Saez I, Boopathi R, Cutter AR, Papai G, Reymer A, Syed SH, Lone IN, Tonchev O, Crucifix C, Menoni H, Papin C, Skoufias DA, Kurumizaka H, Lavery R, Hamiche A, Hayes JJ, Schultz P, Angelov D, Petosa C, Dimitrov S Mol Cell. 2017 May 4;66(3):384-397.e8. doi: 10.1016/j.molcel.2017.04.012. PMID:28475873[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Bednar J, Garcia-Saez I, Boopathi R, Cutter AR, Papai G, Reymer A, Syed SH, Lone IN, Tonchev O, Crucifix C, Menoni H, Papin C, Skoufias DA, Kurumizaka H, Lavery R, Hamiche A, Hayes JJ, Schultz P, Angelov D, Petosa C, Dimitrov S. Structure and Dynamics of a 197 bp Nucleosome in Complex with Linker Histone H1. Mol Cell. 2017 May 4;66(3):384-397.e8. doi: 10.1016/j.molcel.2017.04.012. PMID:28475873 doi:http://dx.doi.org/10.1016/j.molcel.2017.04.012
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