1s32

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[[Image:1s32.gif|left|200px]]
 
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{{Structure
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==Molecular Recognition of the Nucleosomal 'Supergroove'==
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|PDB= 1s32 |SIZE=350|CAPTION= <scene name='initialview01'>1s32</scene>, resolution 2.05&Aring;
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<StructureSection load='1s32' size='340' side='right'caption='[[1s32]], [[Resolution|resolution]] 2.05&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=ABU:GAMMA-AMINO-BUTANOIC+ACID'>ABU</scene>, <scene name='pdbligand=BAL:BETA-ALANINE'>BAL</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=DA:2&#39;-DEOXYADENOSINE-5&#39;-MONOPHOSPHATE'>DA</scene>, <scene name='pdbligand=DC:2&#39;-DEOXYCYTIDINE-5&#39;-MONOPHOSPHATE'>DC</scene>, <scene name='pdbligand=DG:2&#39;-DEOXYGUANOSINE-5&#39;-MONOPHOSPHATE'>DG</scene>, <scene name='pdbligand=DIB:3-AMINO-(DIMETHYLPROPYLAMINE)'>DIB</scene>, <scene name='pdbligand=DT:THYMIDINE-5&#39;-MONOPHOSPHATE'>DT</scene>, <scene name='pdbligand=IMT:4-AMINO-(1-METHYLIMIDAZOLE)-2-CARBOXYLIC+ACID'>IMT</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=OGG:2-(2-CARBAMOYLMETHOXY-ETHOXY)-ACETAMIDE'>OGG</scene>, <scene name='pdbligand=PYB:4-AMINO-(1-METHYLPYRROLE)-2-CARBOXYLIC+ACID'>PYB</scene>
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<table><tr><td colspan='2'>[[1s32]] 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=1S32 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1S32 FirstGlance]. <br>
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|ACTIVITY=
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.05&#8491;</td></tr>
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|GENE= Histone H3 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=8355 Xenopus laevis]), Histone H4 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=8355 Xenopus laevis]), Histone H2A ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=8355 Xenopus laevis]), Histone H2B.1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=8355 Xenopus laevis])
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ABU:GAMMA-AMINO-BUTANOIC+ACID'>ABU</scene>, <scene name='pdbligand=BAL:BETA-ALANINE'>BAL</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=DIB:3-AMINO-(DIMETHYLPROPYLAMINE)'>DIB</scene>, <scene name='pdbligand=IMT:4-AMINO-(1-METHYLIMIDAZOLE)-2-CARBOXYLIC+ACID'>IMT</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=OGG:2-(2-CARBAMOYLMETHOXY-ETHOXY)-ACETAMIDE'>OGG</scene>, <scene name='pdbligand=PYB:4-AMINO-(1-METHYLPYRROLE)-2-CARBOXYLIC+ACID'>PYB</scene></td></tr>
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|DOMAIN=
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1s32 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1s32 OCA], [https://pdbe.org/1s32 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1s32 RCSB], [https://www.ebi.ac.uk/pdbsum/1s32 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1s32 ProSAT]</span></td></tr>
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|RELATEDENTRY=[[1m1a|1M1A]], [[1m19|1M19]], [[1m18|1M18]], [[1kx5|1KX5]], [[1kx3|1KX3]], [[1aoi|1AOI]]
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</table>
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1s32 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1s32 OCA], [http://www.ebi.ac.uk/pdbsum/1s32 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1s32 RCSB]</span>
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== Function ==
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}}
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[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.
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/s3/1s32_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1s32 ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Chromatin is the physiological substrate in all processes involving eukaryotic DNA. By organizing 147 base pairs of DNA into two tight superhelical coils, the nucleosome generates an architecture where DNA regions that are 80 base pairs apart on linear DNA are brought into close proximity, resulting in the formation of DNA "supergrooves." Here, we report the design of a hairpin polyamide dimer that targets one such supergroove. The 2-A crystal structure of the nucleosome-polyamide complex shows that the bivalent "clamp" effectively crosslinks the two gyres of the DNA superhelix, improves positioning of the DNA on the histone octamer, and stabilizes the nucleosome against dissociation. Our findings identify nucleosomal supergrooves as platforms for molecular recognition of condensed eukaryotic DNA. In vivo, supergrooves may foster synergistic protein-protein interactions by bringing two regulatory elements into juxtaposition. Because supergroove formation is independent of the translational position of the DNA on the histone octamer, accurate nucleosome positioning over regulatory elements is not required for supergroove participation in eukaryotic gene regulation.
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'''Molecular Recognition of the Nucleosomal 'Supergroove''''
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Molecular recognition of the nucleosomal "supergroove".,Edayathumangalam RS, Weyermann P, Gottesfeld JM, Dervan PB, Luger K Proc Natl Acad Sci U S A. 2004 May 4;101(18):6864-9. Epub 2004 Apr 20. PMID:15100411<ref>PMID:15100411</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 1s32" style="background-color:#fffaf0;"></div>
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==Overview==
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==See Also==
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Chromatin is the physiological substrate in all processes involving eukaryotic DNA. By organizing 147 base pairs of DNA into two tight superhelical coils, the nucleosome generates an architecture where DNA regions that are 80 base pairs apart on linear DNA are brought into close proximity, resulting in the formation of DNA "supergrooves." Here, we report the design of a hairpin polyamide dimer that targets one such supergroove. The 2-A crystal structure of the nucleosome-polyamide complex shows that the bivalent "clamp" effectively crosslinks the two gyres of the DNA superhelix, improves positioning of the DNA on the histone octamer, and stabilizes the nucleosome against dissociation. Our findings identify nucleosomal supergrooves as platforms for molecular recognition of condensed eukaryotic DNA. In vivo, supergrooves may foster synergistic protein-protein interactions by bringing two regulatory elements into juxtaposition. Because supergroove formation is independent of the translational position of the DNA on the histone octamer, accurate nucleosome positioning over regulatory elements is not required for supergroove participation in eukaryotic gene regulation.
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*[[Histone 3D structures|Histone 3D structures]]
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== References ==
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==About this Structure==
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<references/>
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1S32 is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Xenopus_laevis Xenopus laevis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1S32 OCA].
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__TOC__
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</StructureSection>
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==Reference==
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[[Category: Homo sapiens]]
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Molecular recognition of the nucleosomal "supergroove"., Edayathumangalam RS, Weyermann P, Gottesfeld JM, Dervan PB, Luger K, Proc Natl Acad Sci U S A. 2004 May 4;101(18):6864-9. Epub 2004 Apr 20. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15100411 15100411]
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[[Category: Large Structures]]
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[[Category: Protein complex]]
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[[Category: Xenopus laevis]]
[[Category: Xenopus laevis]]
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[[Category: Dervan, P B.]]
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[[Category: Dervan PB]]
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[[Category: Edayathumangalam, R S.]]
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[[Category: Edayathumangalam RS]]
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[[Category: Gottesfeld, J M.]]
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[[Category: Gottesfeld JM]]
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[[Category: Luger, K.]]
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[[Category: Luger K]]
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[[Category: Weyermann, P.]]
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[[Category: Weyermann P]]
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[[Category: clamp]]
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[[Category: nucleosome core particle (ncp)]]
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[[Category: nucleosome dynamic]]
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[[Category: pyrrole-imidazole (py-im) hairpin polyamide]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 23:36:45 2008''
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Current revision

Molecular Recognition of the Nucleosomal 'Supergroove'

PDB ID 1s32

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OCA

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