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==Crystal structure of nucleosome core particle consisting of human testis-specific histone variants, Th2A and Th2B==
==Crystal structure of nucleosome core particle consisting of human testis-specific histone variants, Th2A and Th2B==
<StructureSection load='5gsu' size='340' side='right' caption='[[5gsu]], [[Resolution|resolution]] 3.10&Aring;' scene=''>
<StructureSection load='5gsu' size='340' side='right'caption='[[5gsu]], [[Resolution|resolution]] 3.10&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[5gsu]] is a 10 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5GSU OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5GSU FirstGlance]. <br>
<table><tr><td colspan='2'>[[5gsu]] is a 10 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5GSU OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5GSU FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</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]] 3.1&#8491;</td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5gt0|5gt0]], [[5gt3|5gt3]]</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</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=5gsu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5gsu OCA], [http://pdbe.org/5gsu PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5gsu RCSB], [http://www.ebi.ac.uk/pdbsum/5gsu PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5gsu 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=5gsu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5gsu OCA], [https://pdbe.org/5gsu PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5gsu RCSB], [https://www.ebi.ac.uk/pdbsum/5gsu PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5gsu ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/H2B1A_HUMAN H2B1A_HUMAN]] Variant histone specifically required to direct the transformation of dissociating nucleosomes to protamine in male germ cells. Entirely replaces classical histone H2B prior nucleosome to protamine transition and probably acts as a nucleosome dissociating factor that creates a more dynamic chromatin, facilitating the large-scale exchange of histones. Also expressed maternally and is present in the female pronucleus, suggesting a similar role in protamine replacement by nucleosomes at fertilization (By similarity). Also found in fat cells, its function and the presence of post-translational modifications specific to such cells are still unclear. 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.<ref>PMID:21249133</ref>  [[http://www.uniprot.org/uniprot/H2A1A_HUMAN H2A1A_HUMAN]] 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/H31_HUMAN H31_HUMAN]  
<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 5gsu" style="background-color:#fffaf0;"></div>
<div class="pdbe-citations 5gsu" style="background-color:#fffaf0;"></div>
==See Also==
*[[Histone 3D structures|Histone 3D structures]]
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Kumarevel, T]]
[[Category: Homo sapiens]]
[[Category: Sivaraman, P]]
[[Category: Large Structures]]
[[Category: Dna binding protein-dna complex]]
[[Category: Kumarevel T]]
[[Category: Histone variant]]
[[Category: Sivaraman P]]
[[Category: Nucleosome]]
[[Category: Testis-specific]]
[[Category: Th2a]]
[[Category: Th2b]]

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