2mv7

From Proteopedia

(Difference between revisions)

Revision as of 17:09, 22 March 2017

Solution NMR structure of DOT1L in complex with AF9 (DOT1L-AF9)

Structural highlights

2mv7 is a 2 chain structure. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	2lm0
Activity:	Histone-lysine N-methyltransferase, with EC number 2.1.1.43
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

[AF9_HUMAN] A chromosomal aberration involving MLLT3 is associated with acute leukemias. Translocation t(9;11)(p22;q23) with KMT2A/MLL1. The result is a rogue activator protein.

Function

[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.^[1] ^[2] [DOT1L_HUMAN] Histone methyltransferase. Methylates 'Lys-79' of histone H3. Nucleosomes are preferred as substrate compared to free histones. Binds to DNA.

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.

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^[3]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Lin C, Smith ER, Takahashi H, Lai KC, Martin-Brown S, Florens L, Washburn MP, Conaway JW, Conaway RC, Shilatifard A. AFF4, a component of the ELL/P-TEFb elongation complex and a shared subunit of MLL chimeras, can link transcription elongation to leukemia. Mol Cell. 2010 Feb 12;37(3):429-37. doi: 10.1016/j.molcel.2010.01.026. PMID:20159561 doi:10.1016/j.molcel.2010.01.026
↑ He N, Liu M, Hsu J, Xue Y, Chou S, Burlingame A, Krogan NJ, Alber T, Zhou Q. HIV-1 Tat and host AFF4 recruit two transcription elongation factors into a bifunctional complex for coordinated activation of HIV-1 transcription. Mol Cell. 2010 May 14;38(3):428-38. doi: 10.1016/j.molcel.2010.04.013. PMID:20471948 doi:10.1016/j.molcel.2010.04.013
↑ Kuntimaddi A, Achille NJ, Thorpe J, Lokken AA, Singh R, Hemenway CS, Adli M, Zeleznik-Le NJ, Bushweller JH. Degree of Recruitment of DOT1L to MLL-AF9 Defines Level of H3K79 Di- and Tri-methylation on Target Genes and Transformation Potential. Cell Rep. 2015 May 5;11(5):808-20. doi: 10.1016/j.celrep.2015.04.004. Epub 2015, Apr 23. PMID:25921540 doi:http://dx.doi.org/10.1016/j.celrep.2015.04.004

1 Structural highlights
2 Disease
3 Function
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2mv7"

@@ Line 1: / Line 1: @@
 ==Solution NMR structure of DOT1L in complex with AF9 (DOT1L-AF9)==
 <StructureSection load='2mv7' size='340' side='right' caption='[[2mv7]], [[NMR_Ensembles_of_Models | 10 NMR models]]' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2lm0|2lm0]]</td></tr>
 <tr id='activity'><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>
-<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=2mv7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2mv7 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2mv7 RCSB], [http://www.ebi.ac.uk/pdbsum/2mv7 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=2mv7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2mv7 OCA], [http://pdbe.org/2mv7 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2mv7 RCSB], [http://www.ebi.ac.uk/pdbsum/2mv7 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2mv7 ProSAT]</span></td></tr>
 </table>
 == Disease ==
@@ Line 19: / Line 20: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 2mv7" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>

2mv7

From Proteopedia

Revision as of 17:09, 22 March 2017

Solution NMR structure of DOT1L in complex with AF9 (DOT1L-AF9)

Structural highlights

Disease

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox