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==Crystal structure of JMJD2A in ternary complex with an histone H3K9me3 peptide and 2-oxoglutarate== | ==Crystal structure of JMJD2A in ternary complex with an histone H3K9me3 peptide and 2-oxoglutarate== | ||
<StructureSection load='2q8c' size='340' side='right' caption='[[2q8c]], [[Resolution|resolution]] 2.05Å' scene=''> | <StructureSection load='2q8c' size='340' side='right' caption='[[2q8c]], [[Resolution|resolution]] 2.05Å' scene=''> | ||
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<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2q8d|2q8d]], [[2q8e|2q8e]]</td></tr> | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2q8d|2q8d]], [[2q8e|2q8e]]</td></tr> | ||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">JMJD2A, JHDM3A, JMJD2, KIAA0677 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr> | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">JMJD2A, JHDM3A, JMJD2, KIAA0677 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=2q8c FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2q8c OCA], [http://pdbe.org/2q8c PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2q8c RCSB], [http://www.ebi.ac.uk/pdbsum/2q8c PDBsum]</span></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=2q8c FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2q8c OCA], [http://pdbe.org/2q8c PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2q8c RCSB], [http://www.ebi.ac.uk/pdbsum/2q8c PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2q8c ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
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Check<jmol> | Check<jmol> | ||
<jmolCheckbox> | <jmolCheckbox> | ||
<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/q8/2q8c_consurf.spt"</scriptWhenChecked> | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/q8/2q8c_consurf.spt"</scriptWhenChecked> | ||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
<text>to colour the structure by Evolutionary Conservation</text> | <text>to colour the structure by Evolutionary Conservation</text> | ||
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</div> | </div> | ||
<div class="pdbe-citations 2q8c" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 2q8c" style="background-color:#fffaf0;"></div> | ||
== References == | == References == | ||
<references/> | <references/> | ||
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[[Category: Brunzelle, J S]] | [[Category: Brunzelle, J S]] | ||
[[Category: Collazo, E]] | [[Category: Collazo, E]] | ||
[[Category: Couture, J | [[Category: Couture, J F]] | ||
[[Category: Ortiz-Tello, P]] | [[Category: Ortiz-Tello, P]] | ||
[[Category: Trievel, R C]] | [[Category: Trievel, R C]] | ||
Revision as of 21:59, 24 January 2018
Crystal structure of JMJD2A in ternary complex with an histone H3K9me3 peptide and 2-oxoglutarateCrystal structure of JMJD2A in ternary complex with an histone H3K9me3 peptide and 2-oxoglutarate
Structural highlights
Function[KDM4A_HUMAN] Histone demethylase that specifically demethylates 'Lys-9' and 'Lys-36' residues of histone H3, thereby playing a central role in histone code. Does not demethylate histone H3 'Lys-4', H3 'Lys-27' nor H4 'Lys-20'. Demethylates trimethylated H3 'Lys-9' and H3 'Lys-36' residue, while it has no activity on mono- and dimethylated residues. Demethylation of Lys residue generates formaldehyde and succinate. Participates in transcriptional repression of ASCL2 and E2F-responsive promoters via the recruitment of histone deacetylases and NCOR1, respectively.[1] [2] [3] Isoform 2: Crucial for muscle differentiation, promotes transcriptional activation of the Myog gene by directing the removal of repressive chromatin marks at its promoter. Lacks the N-terminal demethylase domain.[4] [5] [6] Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedJMJD2A is a JmjC histone demethylase (HDM) that catalyzes the demethylation of di- and trimethylated Lys9 and Lys36 in histone H3 (H3K9me2/3 and H3K36me2/3). Here we present the crystal structures of the JMJD2A catalytic domain in complex with H3K9me3, H3K36me2 and H3K36me3 peptides. The structures reveal that histone substrates are recognized through a network of backbone hydrogen bonds and hydrophobic interactions that deposit the trimethyllysine into the active site. The trimethylated epsilon-ammonium cation is coordinated within a methylammonium-binding pocket through carbon-oxygen (CH...O) hydrogen bonds that position one of the zeta-methyl groups adjacent to the Fe(II) center for hydroxylation and demethylation. Mutations of the residues comprising this pocket abrogate demethylation by JMJD2A, with the exception of an S288A substitution, which augments activity, particularly toward H3K9me2. We propose that this residue modulates the methylation-state specificities of JMJD2 enzymes and other trimethyllysine-specific JmjC HDMs. Specificity and mechanism of JMJD2A, a trimethyllysine-specific histone demethylase.,Couture JF, Collazo E, Ortiz-Tello PA, Brunzelle JS, Trievel RC Nat Struct Mol Biol. 2007 Aug;14(8):689-95. Epub 2007 Jun 24. PMID:17589523[7] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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