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- PDB-6pww: Cryo-EM structure of MLL1 in complex with RbBP5 and WDR5 bound to... -
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Basic information
Entry | Database: PDB / ID: 6pww | |||||||||
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Title | Cryo-EM structure of MLL1 in complex with RbBP5 and WDR5 bound to the nucleosome | |||||||||
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![]() | HISTONE BINDING/DNA BINDING/DNA / Mixed-Lineage Leukemia / MLL1 / nucleosome / histone H3 Lys4 methyltransferase / RbBP5 / WDR5 / HISTONE BINDING-DNA BINDING-DNA complex | |||||||||
Function / homology | ![]() negative regulation of DNA methylation-dependent heterochromatin formation / protein-cysteine methyltransferase activity / [histone H3]-lysine4 N-methyltransferase / histone H3K4 monomethyltransferase activity / response to potassium ion / unmethylated CpG binding / histone H3K4 trimethyltransferase activity / Epigenetic regulation of gene expression by MLL3 and MLL4 complexes / MLL3/4 complex / Set1C/COMPASS complex ...negative regulation of DNA methylation-dependent heterochromatin formation / protein-cysteine methyltransferase activity / [histone H3]-lysine4 N-methyltransferase / histone H3K4 monomethyltransferase activity / response to potassium ion / unmethylated CpG binding / histone H3K4 trimethyltransferase activity / Epigenetic regulation of gene expression by MLL3 and MLL4 complexes / MLL3/4 complex / Set1C/COMPASS complex / MLL1/2 complex / ATAC complex / regulation of short-term neuronal synaptic plasticity / NSL complex / definitive hemopoiesis / histone H3K4 methyltransferase activity / Cardiogenesis / anterior/posterior pattern specification / embryonic hemopoiesis / T-helper 2 cell differentiation / Formation of WDR5-containing histone-modifying complexes / exploration behavior / histone methyltransferase complex / minor groove of adenine-thymine-rich DNA binding / regulation of cell division / regulation of embryonic development / MLL1 complex / histone acetyltransferase complex / membrane depolarization / : / cellular response to transforming growth factor beta stimulus / negative regulation of fibroblast proliferation / spleen development / positive regulation of gluconeogenesis / homeostasis of number of cells within a tissue / transcription initiation-coupled chromatin remodeling / Transferases; Transferring one-carbon groups; Methyltransferases / gluconeogenesis / skeletal system development / post-embryonic development / Deactivation of the beta-catenin transactivating complex / circadian regulation of gene expression / Formation of the beta-catenin:TCF transactivating complex / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / protein modification process / visual learning / PKMTs methylate histone lysines / RMTs methylate histone arginines / response to estrogen / Activation of anterior HOX genes in hindbrain development during early embryogenesis / Transcriptional regulation of granulopoiesis / mitotic spindle / structural constituent of chromatin / nucleosome / heterochromatin formation / nucleosome assembly / HATs acetylate histones / RUNX1 regulates transcription of genes involved in differentiation of HSCs / Neddylation / MLL4 and MLL3 complexes regulate expression of PPARG target genes in adipogenesis and hepatic steatosis / protein-containing complex assembly / fibroblast proliferation / methylation / histone binding / transcription cis-regulatory region binding / regulation of cell cycle / protein heterodimerization activity / apoptotic process / DNA damage response / chromatin binding / regulation of DNA-templated transcription / regulation of transcription by RNA polymerase II / positive regulation of DNA-templated transcription / nucleolus / negative regulation of transcription by RNA polymerase II / protein homodimerization activity / positive regulation of transcription by RNA polymerase II / DNA binding / zinc ion binding / nucleoplasm / identical protein binding / nucleus / cytosol Similarity search - Function | |||||||||
Biological species | ![]() ![]() synthetic construct (others) | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.4 Å | |||||||||
![]() | Park, S.H. / Ayoub, A. / Lee, Y.T. / Xu, J. / Zhang, W. / Zhang, B. / Zhang, Y. / Cianfrocco, M.A. / Su, M. / Dou, Y. / Cho, U. | |||||||||
Funding support | ![]() ![]()
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![]() | ![]() Title: Cryo-EM structure of the human MLL1 core complex bound to the nucleosome. Authors: Sang Ho Park / Alex Ayoub / Young-Tae Lee / Jing Xu / Hanseong Kim / Wei Zheng / Biao Zhang / Liang Sha / Sojin An / Yang Zhang / Michael A Cianfrocco / Min Su / Yali Dou / Uhn-Soo Cho / ![]() Abstract: Mixed lineage leukemia (MLL) family histone methyltransferases are enzymes that deposit histone H3 Lys4 (K4) mono-/di-/tri-methylation and regulate gene expression in mammals. Despite extensive ...Mixed lineage leukemia (MLL) family histone methyltransferases are enzymes that deposit histone H3 Lys4 (K4) mono-/di-/tri-methylation and regulate gene expression in mammals. Despite extensive structural and biochemical studies, the molecular mechanisms whereby the MLL complexes recognize histone H3K4 within nucleosome core particles (NCPs) remain unclear. Here we report the single-particle cryo-electron microscopy (cryo-EM) structure of the NCP-bound human MLL1 core complex. We show that the MLL1 core complex anchors to the NCP via the conserved RbBP5 and ASH2L, which interact extensively with nucleosomal DNA and the surface close to the N-terminal tail of histone H4. Concurrent interactions of RbBP5 and ASH2L with the NCP uniquely align the catalytic MLL1 domain at the nucleosome dyad, thereby facilitating symmetrical access to both H3K4 substrates within the NCP. Our study sheds light on how the MLL1 complex engages chromatin and how chromatin binding promotes MLL1 tri-methylation activity. | |||||||||
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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PDBx/mmCIF format | ![]() | 564.8 KB | Display | ![]() |
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PDB format | ![]() | 401.5 KB | Display | ![]() |
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-Validation report
Summary document | ![]() | 890.1 KB | Display | ![]() |
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Full document | ![]() | 949.7 KB | Display | |
Data in XML | ![]() | 62.4 KB | Display | |
Data in CIF | ![]() | 96.6 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 20513MC ![]() 6pwvC ![]() 6pwxC M: map data used to model this data C: citing same article ( |
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Similar structure data |
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Assembly
Deposited unit | ![]()
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Components
-Protein , 7 types, 11 molecules ABCGKHLIMJN
#1: Protein | Mass: 59179.359 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() | ||||||
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#2: Protein | Mass: 34390.992 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() | ||||||
#3: Protein | Mass: 24141.732 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() References: UniProt: Q03164, histone-lysine N-methyltransferase | ||||||
#4: Protein | Mass: 15435.126 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #5: Protein | Mass: 11394.426 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #6: Protein | Mass: 13978.241 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #7: Protein | Mass: 13655.948 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
-DNA chain , 2 types, 2 molecules OP
#8: DNA chain | Mass: 45138.770 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others) |
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#9: DNA chain | Mass: 45610.043 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others) |
-Non-polymers , 2 types, 2 molecules 


#10: Chemical | ChemComp-SAH / |
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#11: Chemical | ChemComp-ZN / |
-Details
Has ligand of interest | Y |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: RbBP5, WDR5, and MLL1 in complex with the nucleosome / Type: COMPLEX / Entity ID: #1-#9 / Source: MULTIPLE SOURCES |
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Source (natural) | Organism: ![]() |
Source (recombinant) | Organism: ![]() ![]() |
Buffer solution | pH: 7.5 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Details: unspecified |
Vitrification | Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277.15 K |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 64 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
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Processing
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CTF correction | Type: PHASE FLIPPING ONLY | ||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||
3D reconstruction | Resolution: 4.4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 21114 / Symmetry type: POINT | ||||||||||||||||||||||||
Refinement | Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
Refine LS restraints |
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