2mv7
From Proteopedia
(Difference between revisions)
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== Function == | == Function == | ||
[[http://www.uniprot.org/uniprot/AF9_HUMAN AF9_HUMAN]] Component of the super elongation complex (SEC), a complex required to increase the catalytic rate of RNA polymerase II transcription by suppressing transient pausing by the polymerase at multiple sites along the DNA.<ref>PMID:20159561</ref> <ref>PMID:20471948</ref> [[http://www.uniprot.org/uniprot/DOT1L_HUMAN DOT1L_HUMAN]] Histone methyltransferase. Methylates 'Lys-79' of histone H3. Nucleosomes are preferred as substrate compared to free histones. Binds to DNA. | [[http://www.uniprot.org/uniprot/AF9_HUMAN AF9_HUMAN]] Component of the super elongation complex (SEC), a complex required to increase the catalytic rate of RNA polymerase II transcription by suppressing transient pausing by the polymerase at multiple sites along the DNA.<ref>PMID:20159561</ref> <ref>PMID:20471948</ref> [[http://www.uniprot.org/uniprot/DOT1L_HUMAN DOT1L_HUMAN]] Histone methyltransferase. Methylates 'Lys-79' of histone H3. Nucleosomes are preferred as substrate compared to free histones. Binds to DNA. | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | The MLL gene is a common target of chromosomal translocations found in human leukemia. MLL-fusion leukemia has a consistently poor outcome. One of the most common translocation partners is AF9 (MLLT3). MLL-AF9 recruits DOT1L, a histone 3 lysine 79 methyltransferase (H3K79me1/me2/me3), leading to aberrant gene transcription. We show that DOT1L has three AF9 binding sites and present the nuclear magnetic resonance (NMR) solution structure of a DOT1L-AF9 complex. We generate structure-guided point mutations and find that they have graded effects on recruitment of DOT1L to MLL-AF9. Chromatin immunoprecipitation sequencing (ChIP-seq) analyses of H3K79me2 and H3K79me3 show that graded reduction of the DOT1L interaction with MLL-AF9 results in differential loss of H3K79me2 and me3 at MLL-AF9 target genes. Furthermore, the degree of DOT1L recruitment is linked to the level of MLL-AF9 hematopoietic transformation. | ||
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| + | Degree of Recruitment of DOT1L to MLL-AF9 Defines Level of H3K79 Di- and Tri-methylation on Target Genes and Transformation Potential.,Kuntimaddi A, Achille NJ, Thorpe J, Lokken AA, Singh R, Hemenway CS, Adli M, Zeleznik-Le NJ, Bushweller JH Cell Rep. 2015 May 5;11(5):808-20. doi: 10.1016/j.celrep.2015.04.004. Epub 2015, Apr 23. PMID:25921540<ref>PMID:25921540</ref> | ||
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| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
== References == | == References == | ||
<references/> | <references/> | ||
Revision as of 09:08, 17 June 2015
Solution NMR structure of DOT1L in complex with AF9 (DOT1L-AF9)
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