5f6l
From Proteopedia
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| ==The crystal structure of MLL1 (N3861I/Q3867L) in complex with RbBP5 and Ash2L== | ==The crystal structure of MLL1 (N3861I/Q3867L) in complex with RbBP5 and Ash2L== | ||
| - | <StructureSection load='5f6l' size='340' side='right' caption='[[5f6l]], [[Resolution|resolution]] 1.90Å' scene=''> | + | <StructureSection load='5f6l' size='340' side='right'caption='[[5f6l]], [[Resolution|resolution]] 1.90Å' scene=''> | 
| == Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>[[5f6l]] is a 3 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5F6L OCA]. For a <b>guided tour on the structure components</b> use [ | + | <table><tr><td colspan='2'>[[5f6l]] is a 3 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=5F6L OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5F6L FirstGlance]. <br> | 
| - | </td></tr><tr id=' | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.9Å</td></tr> | 
| - | <tr id=' | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SAH:S-ADENOSYL-L-HOMOCYSTEINE'>SAH</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | 
| - | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5f6l FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5f6l OCA], [https://pdbe.org/5f6l PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5f6l RCSB], [https://www.ebi.ac.uk/pdbsum/5f6l PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5f6l ProSAT]</span></td></tr> | |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | + | |
| </table> | </table> | ||
| - | == Disease == | ||
| - | [[http://www.uniprot.org/uniprot/KMT2A_HUMAN KMT2A_HUMAN]] Acute myeloid leukemia with 11q23 abnormalities;Precursor B-cell acute lymphoblastic leukemia;Wiedemann-Steiner syndrome;Acute biphenotypic leukemia;Acute undifferentiated leukemia;Bilineal acute leukemia. The disease is caused by mutations affecting the gene represented in this entry.  Chromosomal aberrations involving KMT2A are a cause of acute leukemias. Translocation t(1;11)(q21;q23) with MLLT11/AF1Q; translocation t(3;11)(p21;q23) with NCKIPSD/AF3p21; translocation t(3,11)(q25,q23) with GMPS; translocation t(4;11)(q21;q23) with AFF1/MLLT2/AF4; insertion ins(5;11)(q31;q13q23) with AFF4/AF5Q31; translocation t(5;11)(q12;q23) with AF5-alpha/CENPK; translocation t(6;11)(q27;q23) with MLLT4/AF6; translocation t(9;11)(p22;q23) with MLLT3/AF9; translocation t(10;11)(p11.2;q23) with ABI1; translocation t(10;11)(p12;q23) with MLLT10/AF10; t(11;15)(q23;q14) with CASC5 and ZFYVE19; translocation t(11;17)(q23;q21) with MLLT6/AF17; translocation t(11;19)(q23;p13.3) with ELL; translocation t(11;19)(q23;p13.3) with MLLT1/ENL; translocation t(11;19)(q23;p23) with GAS7; translocation t(X;11)(q13;q23) with FOXO4/AFX1. Translocation t(3;11)(q28;q23) with LPP. Translocation t(10;11)(q22;q23) with TET1. Translocation t(9;11)(q34;q23) with DAB2IP. Translocation t(4;11)(p12;q23) with FRYL. Fusion proteins KMT2A-MLLT1, KMT2A-MLLT3 and KMT2A-ELL interact with PPP1R15A and, on the contrary to unfused KMT2A, inhibit PPP1R15A-induced apoptosis.  A chromosomal aberration involving KMT2A may be a cause of chronic neutrophilic leukemia. Translocation t(4;11)(q21;q23) with SEPT11.  | ||
| == Function == | == Function == | ||
| - | [ | + | [https://www.uniprot.org/uniprot/RBBP5_HUMAN RBBP5_HUMAN] In embryonic stem (ES) cells, plays a crucial role in the differentiation potential, particularly along the neural lineage, regulating gene induction and H3 'Lys-4' methylation at key developmental loci, including that mediated by retinoic acid (By similarity). As part of the MLL1/MLL complex, involved in mono-, di- and trimethylation at 'Lys-4' of histone H3. Histone H3 'Lys-4' methylation represents a specific tag for epigenetic transcriptional activation.<ref>PMID:19556245</ref>  | 
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | The mixed lineage leukaemia (MLL) family of proteins (including MLL1-MLL4, SET1A and SET1B) specifically methylate histone 3 Lys4, and have pivotal roles in the transcriptional regulation of genes involved in haematopoiesis and development. The methyltransferase activity of MLL1, by itself severely compromised, is stimulated by the three conserved factors WDR5, RBBP5 and ASH2L, which are shared by all MLL family complexes. However, the molecular mechanism of how these factors regulate the activity of MLL proteins still remains poorly understood. Here we show that a minimized human RBBP5-ASH2L heterodimer is the structural unit that interacts with and activates all MLL family histone methyltransferases. Our structural, biochemical and computational analyses reveal a two-step activation mechanism of MLL family proteins. These findings provide unprecedented insights into the common theme and functional plasticity in complex assembly and activity regulation of MLL family methyltransferases, and also suggest a universal regulation mechanism for most histone methyltransferases. | ||
| + | |||
| + | Structural basis for activity regulation of MLL family methyltransferases.,Li Y, Han J, Zhang Y, Cao F, Liu Z, Li S, Wu J, Hu C, Wang Y, Shuai J, Chen J, Cao L, Li D, Shi P, Tian C, Zhang J, Dou Y, Li G, Chen Y, Lei M Nature. 2016 Feb 25;530(7591):447-52. doi: 10.1038/nature16952. Epub 2016 Feb 17. PMID:26886794<ref>PMID:26886794</ref> | ||
| + | |||
| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 5f6l" style="background-color:#fffaf0;"></div> | ||
| + | |||
| + | ==See Also== | ||
| + | *[[Histone methyltransferase 3D structures|Histone methyltransferase 3D structures]] | ||
| == References == | == References == | ||
| <references/> | <references/> | ||
| __TOC__ | __TOC__ | ||
| </StructureSection> | </StructureSection> | ||
| - | [[Category:  | + | [[Category: Homo sapiens]] | 
| - | [[Category:  | + | [[Category: Large Structures]] | 
| - | [[Category:  | + | [[Category: Chen Y]] | 
| - | + | [[Category: Lei M]] | |
| - | [[Category:  | + | [[Category: Li Y]] | 
| - | [[Category:  | + | |
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Current revision
The crystal structure of MLL1 (N3861I/Q3867L) in complex with RbBP5 and Ash2L
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Categories: Homo sapiens | Large Structures | Chen Y | Lei M | Li Y
