6ds6

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==Crystal structure of p300 ZZ domain in complex with histone H3 peptide==
==Crystal structure of p300 ZZ domain in complex with histone H3 peptide==
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<StructureSection load='6ds6' size='340' side='right' caption='[[6ds6]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
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<StructureSection load='6ds6' size='340' side='right'caption='[[6ds6]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[6ds6]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6DS6 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6DS6 FirstGlance]. <br>
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<table><tr><td colspan='2'>[[6ds6]] is a 1 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=6DS6 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6DS6 FirstGlance]. <br>
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</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=ZN:ZINC+ION'>ZN</scene></td></tr>
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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]] 1.95&#8491;</td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">EP300, P300 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
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<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=ZN:ZINC+ION'>ZN</scene></td></tr>
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<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=6ds6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6ds6 OCA], [http://pdbe.org/6ds6 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6ds6 RCSB], [http://www.ebi.ac.uk/pdbsum/6ds6 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6ds6 ProSAT]</span></td></tr>
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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=6ds6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6ds6 OCA], [https://pdbe.org/6ds6 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6ds6 RCSB], [https://www.ebi.ac.uk/pdbsum/6ds6 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6ds6 ProSAT]</span></td></tr>
</table>
</table>
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<div style="background-color:#fffaf0;">
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== Disease ==
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== Publication Abstract from PubMed ==
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[https://www.uniprot.org/uniprot/EP300_HUMAN EP300_HUMAN] Note=Defects in EP300 may play a role in epithelial cancer. Note=Chromosomal aberrations involving EP300 may be a cause of acute myeloid leukemias. Translocation t(8;22)(p11;q13) with KAT6A. Defects in EP300 are the cause of Rubinstein-Taybi syndrome type 2 (RSTS2) [MIM:[https://omim.org/entry/613684 613684]. A disorder characterized by craniofacial abnormalities, postnatal growth deficiency, broad thumbs, broad big toes, mental retardation and a propensity for development of malignancies. Some individuals with RSTS2 have less severe mental impairment, more severe microcephaly, and a greater degree of changes in facial bone structure than RSTS1 patients.<ref>PMID:15706485</ref>
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Human p300 is a transcriptional co-activator and a major acetyltransferase that acetylates histones and other proteins facilitating gene transcription. The activity of p300 relies on the fine-tuned interactome that involves a dozen p300 domains and hundreds of binding partners and links p300 to a wide range of vital signaling events. Here, we report a novel function of the ZZ-type zinc finger (ZZ) of p300 as a reader of histone H3. We show that the ZZ domain and acetyllysine-recognizing bromodomain of p300 play critical roles in modulating p300 enzymatic activity and its association with chromatin. The acetyllysine binding function of bromodomain is essential for acetylation of histones H3 and H4, whereas interaction of the ZZ domain with H3 promotes selective acetylation of the histone H3K27 and H3K18 sites.
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== Function ==
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[https://www.uniprot.org/uniprot/EP300_HUMAN EP300_HUMAN] Functions as histone acetyltransferase and regulates transcription via chromatin remodeling. Acetylates all four core histones in nucleosomes. Histone acetylation gives an epigenetic tag for transcriptional activation. Mediates cAMP-gene regulation by binding specifically to phosphorylated CREB protein. Also functions as acetyltransferase for nonhistone targets. Acetylates 'Lys-131' of ALX1 and acts as its coactivator in the presence of CREBBP. Acetylates SIRT2 and is proposed to indirectly increase the transcriptional activity of TP53 through acetylation and subsequent attenuation of SIRT2 deacetylase function. Acetylates HDAC1 leading to its inactivation and modulation of transcription. Acts as a TFAP2A-mediated transcriptional coactivator in presence of CITED2. Plays a role as a coactivator of NEUROD1-dependent transcription of the secretin and p21 genes and controls terminal differentiation of cells in the intestinal epithelium. Promotes cardiac myocyte enlargement. Can also mediate transcriptional repression. Binds to and may be involved in the transforming capacity of the adenovirus E1A protein. In case of HIV-1 infection, it is recruited by the viral protein Tat. Regulates Tat's transactivating activity and may help inducing chromatin remodeling of proviral genes. Acetylates FOXO1 and enhances its transcriptional activity.<ref>PMID:11701890</ref> <ref>PMID:10733570</ref> <ref>PMID:11430825</ref> <ref>PMID:12586840</ref> <ref>PMID:12929931</ref> <ref>PMID:15186775</ref> <ref>PMID:15890677</ref> <ref>PMID:16762839</ref> <ref>PMID:18722353</ref>
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The ZZ domain of p300 mediates specificity of the adjacent HAT domain for histone H3.,Zhang Y, Xue Y, Shi J, Ahn J, Mi W, Ali M, Wang X, Klein BJ, Wen H, Li W, Shi X, Kutateladze TG Nat Struct Mol Biol. 2018 Sep;25(9):841-849. doi: 10.1038/s41594-018-0114-9. Epub, 2018 Aug 27. PMID:30150647<ref>PMID:30150647</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 6ds6" style="background-color:#fffaf0;"></div>
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== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Human]]
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[[Category: Homo sapiens]]
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[[Category: Kutateladze, T G]]
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[[Category: Large Structures]]
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[[Category: Zhang, Y]]
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[[Category: Kutateladze TG]]
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[[Category: Chromatin]]
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[[Category: Zhang Y]]
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[[Category: Gene regulation]]
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[[Category: Histone]]
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[[Category: P300]]
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[[Category: Transferase]]
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[[Category: Zz domain]]
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Current revision

Crystal structure of p300 ZZ domain in complex with histone H3 peptide

PDB ID 6ds6

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