1u2z

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[[Image:1u2z.png|left|200px]]
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==Crystal structure of histone K79 methyltransferase Dot1p from yeast==
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<StructureSection load='1u2z' size='340' side='right' caption='[[1u2z]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1u2z]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1U2Z OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1U2Z FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SAH:S-ADENOSYL-L-HOMOCYSTEINE'>SAH</scene><br>
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<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">DOT1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4932 Saccharomyces cerevisiae])</td></tr>
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<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Histone-lysine_N-methyltransferase Histone-lysine N-methyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.1.1.43 2.1.1.43] </span></td></tr>
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1u2z FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1u2z OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1u2z RCSB], [http://www.ebi.ac.uk/pdbsum/1u2z PDBsum]</span></td></tr>
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<table>
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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/u2/1u2z_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/chain_selection.php?pdb_ID=2ata 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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Methylation of Lys79 on histone H3 by Dot1p is important for gene silencing. The elongated structure of the conserved core of yeast Dot1p contains an N-terminal helical domain and a seven-stranded catalytic domain that harbors the binding site for the methyl-donor and an active site pocket sided with conserved hydrophobic residues. The S-adenosyl-L-homocysteine exhibits an extended conformation distinct from the folded conformation observed in structures of SET domain histone lysine methyltransferases. A catalytic asparagine (Asn479), located at the bottom of the active site pocket, suggests a mechanism similar to that employed for amino methylation in DNA and protein glutamine methylation. The acidic, concave cleft between the two domains contains two basic residue binding pockets that could accommodate the outwardly protruding basic side chains around Lys79 of histone H3 on the disk-like nucleosome surface. Biochemical studies suggest that recombinant Dot1 proteins are active on recombinant nucleosomes, free of any modifications.
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{{STRUCTURE_1u2z| PDB=1u2z | SCENE= }}
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Structure of the conserved core of the yeast Dot1p, a nucleosomal histone H3 lysine 79 methyltransferase.,Sawada K, Yang Z, Horton JR, Collins RE, Zhang X, Cheng X J Biol Chem. 2004 Oct 8;279(41):43296-306. Epub 2004 Jul 29. PMID:15292170<ref>PMID:15292170</ref>
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===Crystal structure of histone K79 methyltransferase Dot1p from yeast===
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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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{{ABSTRACT_PUBMED_15292170}}
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==About this Structure==
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[[1u2z]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1U2Z OCA].
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==See Also==
==See Also==
*[[Histone methyltransferase|Histone methyltransferase]]
*[[Histone methyltransferase|Histone methyltransferase]]
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:015292170</ref><references group="xtra"/>
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__TOC__
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</StructureSection>
[[Category: Histone-lysine N-methyltransferase]]
[[Category: Histone-lysine N-methyltransferase]]
[[Category: Saccharomyces cerevisiae]]
[[Category: Saccharomyces cerevisiae]]

Revision as of 00:04, 29 September 2014

Crystal structure of histone K79 methyltransferase Dot1p from yeast

1u2z, resolution 2.20Å

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