|
|
(One intermediate revision not shown.) |
Line 1: |
Line 1: |
| | | |
| ==X-ray structure of WDR5-MLL1 Win motif peptide binary complex== | | ==X-ray structure of WDR5-MLL1 Win motif peptide binary complex== |
- | <StructureSection load='4esg' size='340' side='right' caption='[[4esg]], [[Resolution|resolution]] 1.70Å' scene=''> | + | <StructureSection load='4esg' size='340' side='right'caption='[[4esg]], [[Resolution|resolution]] 1.70Å' scene=''> |
| == Structural highlights == | | == Structural highlights == |
- | <table><tr><td colspan='2'>[[4esg]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4ESG OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4ESG FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4esg]] is a 4 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=4ESG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4ESG FirstGlance]. <br> |
- | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4erq|4erq]], [[4ery|4ery]], [[4erz|4erz]], [[4es0|4es0]]</td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.7Å</td></tr> |
- | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">BIG3, WDR5 ([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'>[https://proteopedia.org/fgij/fg.htm?mol=4esg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4esg OCA], [https://pdbe.org/4esg PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4esg RCSB], [https://www.ebi.ac.uk/pdbsum/4esg PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4esg ProSAT]</span></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=4esg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4esg OCA], [http://pdbe.org/4esg PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4esg RCSB], [http://www.ebi.ac.uk/pdbsum/4esg PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4esg ProSAT]</span></td></tr> | + | |
| </table> | | </table> |
- | == Disease == | |
- | [[http://www.uniprot.org/uniprot/MLL1_HUMAN MLL1_HUMAN]] Defects in MLL are the cause of Wiedemann-Steiner syndrome (WDSTS) [MIM:[http://omim.org/entry/605130 605130]]. A syndrome characterized by hairy elbows (hypertrichosis cubiti), intellectual disability, a distinctive facial appearance, and short stature. Facial characteristics include long eyelashes, thick or arched eyebrows with a lateral flare, and downslanting and vertically narrow palpebral fissures.<ref>PMID:10490642</ref> <ref>PMID:22795537</ref> Note=Chromosomal aberrations involving MLL 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 MLL-MLLT1, MLL-MLLT3 and MLL-ELL interact with PPP1R15A and, on the contrary to unfused MLL, inhibit PPP1R15A-induced apoptosis.<ref>PMID:10490642</ref> Note=A chromosomal aberration involving MLL may be a cause of chronic neutrophilic leukemia. Translocation t(4;11)(q21;q23) with SEPT11.<ref>PMID:10490642</ref> | |
| == Function == | | == Function == |
- | [[http://www.uniprot.org/uniprot/WDR5_HUMAN WDR5_HUMAN]] Contributes to histone modification. May position the N-terminus of histone H3 for efficient trimethylation at 'Lys-4'. As part of the MLL1/MLL complex it is involved in methylation and dimethylation at 'Lys-4' of histone H3. H3 'Lys-4' methylation represents a specific tag for epigenetic transcriptional activation. As part of the NSL complex it may be involved in acetylation of nucleosomal histone H4 on several lysine residues. May regulate osteoblasts differentiation.<ref>PMID:19556245</ref> <ref>PMID:19103755</ref> <ref>PMID:20018852</ref> <ref>PMID:16600877</ref> <ref>PMID:16829960</ref> [[http://www.uniprot.org/uniprot/MLL1_HUMAN MLL1_HUMAN]] Histone methyltransferase that plays an essential role in early development and hematopoiesis. Catalytic subunit of the MLL1/MLL complex, a multiprotein complex that mediates both methylation of 'Lys-4' of histone H3 (H3K4me) complex and acetylation of 'Lys-16' of histone H4 (H4K16ac). In the MLL1/MLL complex, it specifically mediates H3K4me, a specific tag for epigenetic transcriptional activation. Has weak methyltransferase activity by itself, and requires other component of the MLL1/MLL complex to obtain full methyltransferase activity. Has no activity toward histone H3 phosphorylated on 'Thr-3', less activity toward H3 dimethylated on 'Arg-8' or 'Lys-9', while it has higher activity toward H3 acetylated on 'Lys-9'. Required for transcriptional activation of HOXA9. Promotes PPP1R15A-induced apoptosis.<ref>PMID:10490642</ref> <ref>PMID:12453419</ref> <ref>PMID:15960975</ref> <ref>PMID:19556245</ref> | + | [https://www.uniprot.org/uniprot/WDR5_HUMAN WDR5_HUMAN] Contributes to histone modification. May position the N-terminus of histone H3 for efficient trimethylation at 'Lys-4'. As part of the MLL1/MLL complex it is involved in methylation and dimethylation at 'Lys-4' of histone H3. H3 'Lys-4' methylation represents a specific tag for epigenetic transcriptional activation. As part of the NSL complex it may be involved in acetylation of nucleosomal histone H4 on several lysine residues. May regulate osteoblasts differentiation.<ref>PMID:19556245</ref> <ref>PMID:19103755</ref> <ref>PMID:20018852</ref> <ref>PMID:16600877</ref> <ref>PMID:16829960</ref> |
- | <div style="background-color:#fffaf0;">
| + | |
- | == Publication Abstract from PubMed ==
| + | |
- | Translocations and amplifications of the mixed lineage leukemia-1 (MLL1) gene are associated with aggressive myeloid and lymphocytic leukemias in humans. MLL1 is a member of the SET1 family of histone H3 lysine 4 (H3K4) methyltransferases, which are required for transcription of genes involved in hematopoiesis and development. MLL1 associates with a subcomplex containing WDR5, RbBP5, Ash2L, and DPY-30 (WRAD), which together form the MLL1 core complex that is required for sequential mono- and dimethylation of H3K4. We previously demonstrated that WDR5 binds the conserved WDR5 interaction (Win) motif of MLL1 in vitro, an interaction that is required for the H3K4 dimethylation activity of the MLL1 core complex. In this investigation, we demonstrate that arginine 3765 of the MLL1 Win motif is required to co-immunoprecipitate WRAD from mammalian cells, suggesting that the WDR5-Win motif interaction is important for the assembly of the MLL1 core complex in vivo. We also demonstrate that peptides that mimic SET1 family Win motif sequences inhibit H3K4 dimethylation by the MLL1 core complex with varying degrees of efficiency. To understand the structural basis for these differences, we determined structures of WDR5 bound to six different naturally occurring Win motif sequences at resolutions ranging from 1.9 to 1.2 A. Our results reveal that binding energy differences result from interactions between non-conserved residues C-terminal to the Win motif and to a lesser extent from subtle variation of residues within the Win motif. These results highlight a new class of methylation inhibitors that may be useful for the treatment of MLL1-related malignancies.
| + | |
| | | |
- | Structural basis for WDR5 interaction (Win) motif recognition in human SET1 family histone methyltransferases.,Dharmarajan V, Lee JH, Patel A, Skalnik DG, Cosgrove MS J Biol Chem. 2012 Aug 10;287(33):27275-89. Epub 2012 Jun 3. PMID:22665483<ref>PMID:22665483</ref>
| + | ==See Also== |
- | | + | *[[WD-repeat protein 3D structures|WD-repeat protein 3D structures]] |
- | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
| + | |
- | </div>
| + | |
- | <div class="pdbe-citations 4esg" style="background-color:#fffaf0;"></div>
| + | |
| == References == | | == References == |
| <references/> | | <references/> |
| __TOC__ | | __TOC__ |
| </StructureSection> | | </StructureSection> |
- | [[Category: Histone-lysine N-methyltransferase]] | + | [[Category: Homo sapiens]] |
- | [[Category: Human]] | + | [[Category: Large Structures]] |
- | [[Category: Cosgrove, M S]] | + | [[Category: Cosgrove MS]] |
- | [[Category: Dharmarajan, V]] | + | [[Category: Dharmarajan V]] |
- | [[Category: Lee, J H]] | + | [[Category: Lee J-H]] |
- | [[Category: Patel, A]] | + | [[Category: Patel A]] |
- | [[Category: Skalnik, D G]] | + | [[Category: Skalnik DG]] |
- | [[Category: 3-10 helix]]
| + | |
- | [[Category: Ash2l]]
| + | |
- | [[Category: Beta propeller]]
| + | |
- | [[Category: Core complex]]
| + | |
- | [[Category: Histone]]
| + | |
- | [[Category: Lysine methyltransferase]]
| + | |
- | [[Category: Mll1]]
| + | |
- | [[Category: Rbbp5]]
| + | |
- | [[Category: Transcription-transferase complex]]
| + | |
- | [[Category: Wd40]]
| + | |
- | [[Category: Win motif]]
| + | |