+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-0695 | |||||||||
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Title | Cryo-EM structure of human MLL1-NCP complex, binding mode2 | |||||||||
Map data | Main map of human MLL1-NCP complex, binding mode2 | |||||||||
Sample |
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Keywords | histone modification / nucleosome / MLL / TRANSCRIPTION / TRANSCRIPTION-DNA complex | |||||||||
Function / homology | Function and homology information protein-cysteine methyltransferase activity / response to potassium ion / [histone H3]-lysine4 N-methyltransferase / histone H3K4 monomethyltransferase activity / unmethylated CpG binding / histone H3K4 trimethyltransferase activity / negative regulation of DNA methylation-dependent heterochromatin formation / regulation of short-term neuronal synaptic plasticity / MLL3/4 complex / Set1C/COMPASS complex ...protein-cysteine methyltransferase activity / response to potassium ion / [histone H3]-lysine4 N-methyltransferase / histone H3K4 monomethyltransferase activity / unmethylated CpG binding / histone H3K4 trimethyltransferase activity / negative regulation of DNA methylation-dependent heterochromatin formation / regulation of short-term neuronal synaptic plasticity / MLL3/4 complex / Set1C/COMPASS complex / MLL1/2 complex / ATAC complex / definitive hemopoiesis / NSL complex / histone H3K4 methyltransferase activity / T-helper 2 cell differentiation / : / Cardiogenesis / embryonic hemopoiesis / exploration behavior / anterior/posterior pattern specification / histone methyltransferase complex / regulation of tubulin deacetylation / : / regulation of cell division / Formation of WDR5-containing histone-modifying complexes / minor groove of adenine-thymine-rich DNA binding / membrane depolarization / MLL1 complex / regulation of embryonic development / hemopoiesis / histone acetyltransferase complex / negative regulation of fibroblast proliferation / homeostasis of number of cells within a tissue / positive regulation of gluconeogenesis / spleen development / transcription initiation-coupled chromatin remodeling / cellular response to transforming growth factor beta stimulus / methylated histone binding / Transferases; Transferring one-carbon groups; Methyltransferases / post-embryonic development / skeletal system development / Deactivation of the beta-catenin transactivating complex / gluconeogenesis / Formation of the beta-catenin:TCF transactivating complex / circadian regulation of gene expression / protein modification process / lysine-acetylated histone binding / euchromatin / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / visual learning / mitotic spindle / PKMTs methylate histone lysines / RMTs methylate histone arginines / beta-catenin binding / Activation of anterior HOX genes in hindbrain development during early embryogenesis / Transcriptional regulation of granulopoiesis / structural constituent of chromatin / response to estrogen / nucleosome / Neddylation / RUNX1 regulates transcription of genes involved in differentiation of HSCs / HATs acetylate histones / histone binding / fibroblast proliferation / protein-containing complex assembly / transcription cis-regulatory region binding / regulation of cell cycle / protein heterodimerization activity / apoptotic process / DNA damage response / chromatin binding / positive regulation of cell population proliferation / nucleolus / regulation of DNA-templated transcription / regulation of transcription by RNA polymerase II / positive regulation of DNA-templated transcription / 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 / metal ion binding / nucleus / cytosol Similarity search - Function | |||||||||
Biological species | Homo sapiens (human) / Xenopus laevis (African clawed frog) / synthetic construct (others) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 4.5 Å | |||||||||
Authors | Huang J / Xue H | |||||||||
Funding support | China, 1 items
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Citation | Journal: Nature / Year: 2019 Title: Structural basis of nucleosome recognition and modification by MLL methyltransferases. Authors: Han Xue / Tonghui Yao / Mi Cao / Guanjun Zhu / Yan Li / Guiyong Yuan / Yong Chen / Ming Lei / Jing Huang / Abstract: Methyltransferases of the mixed-lineage leukaemia (MLL) family-which include MLL1, MLL2, MLL3, MLL4, SET1A and SET1B-implement methylation of histone H3 on lysine 4 (H3K4), and have critical and ...Methyltransferases of the mixed-lineage leukaemia (MLL) family-which include MLL1, MLL2, MLL3, MLL4, SET1A and SET1B-implement methylation of histone H3 on lysine 4 (H3K4), and have critical and distinct roles in the regulation of transcription in haematopoiesis, adipogenesis and development. The C-terminal catalytic SET (Su(var.)3-9, enhancer of zeste and trithorax) domains of MLL proteins are associated with a common set of regulatory factors (WDR5, RBBP5, ASH2L and DPY30) to achieve specific activities. Current knowledge of the regulation of MLL activity is limited to the catalysis of histone H3 peptides, and how H3K4 methyl marks are deposited on nucleosomes is poorly understood. H3K4 methylation is stimulated by mono-ubiquitination of histone H2B on lysine 120 (H2BK120ub1), a prevalent histone H2B mark that disrupts chromatin compaction and favours open chromatin structures, but the underlying mechanism remains unknown. Here we report cryo-electron microscopy structures of human MLL1 and MLL3 catalytic modules associated with nucleosome core particles that contain H2BK120ub1 or unmodified H2BK120. These structures demonstrate that the MLL1 and MLL3 complexes both make extensive contacts with the histone-fold and DNA regions of the nucleosome; this allows ease of access to the histone H3 tail, which is essential for the efficient methylation of H3K4. The H2B-conjugated ubiquitin binds directly to RBBP5, orienting the association between MLL1 or MLL3 and the nucleosome. The MLL1 and MLL3 complexes display different structural organizations at the interface between the WDR5, RBBP5 and MLL1 (or the corresponding MLL3) subunits, which accounts for the opposite roles of WDR5 in regulating the activity of the two enzymes. These findings transform our understanding of the structural basis for the regulation of MLL activity at the nucleosome level, and highlight the pivotal role of nucleosome regulation in histone-tail modification. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_0695.map.gz | 58.5 MB | EMDB map data format | |
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Header (meta data) | emd-0695-v30.xml emd-0695.xml | 27 KB 27 KB | Display Display | EMDB header |
Images | emd_0695.png | 176.5 KB | ||
Filedesc metadata | emd-0695.cif.gz | 7.5 KB | ||
Others | emd_0695_additional.map.gz emd_0695_additional_1.map.gz | 70.3 MB 70.3 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-0695 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-0695 | HTTPS FTP |
-Related structure data
Related structure data | 6kizMC 0693C 0694C 9998C 9999C 6kiuC 6kivC 6kiwC 6kixC M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_0695.map.gz / Format: CCP4 / Size: 75.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | Main map of human MLL1-NCP complex, binding mode2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.1 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Additional map: Additional map shows good density of RBBP5 WD40 domain.
File | emd_0695_additional.map | ||||||||||||
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Annotation | Additional map shows good density of RBBP5 WD40 domain. | ||||||||||||
Projections & Slices |
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Density Histograms |
-Additional map: Additional map shows good density of RBBP5 WD40 domain.
File | emd_0695_additional_1.map | ||||||||||||
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Annotation | Additional map shows good density of RBBP5 WD40 domain. | ||||||||||||
Projections & Slices |
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Density Histograms |
-Sample components
+Entire : Human MLL1 complex associated with an unmodified nucleosome, bind...
+Supramolecule #1: Human MLL1 complex associated with an unmodified nucleosome, bind...
+Supramolecule #2: Human MLL1 complex
+Supramolecule #3: unmodified nucleosome
+Macromolecule #1: Histone H3
+Macromolecule #2: Histone H4
+Macromolecule #3: Histone H2A
+Macromolecule #4: Histone H2B 1.1
+Macromolecule #7: Retinoblastoma-binding protein 5
+Macromolecule #8: Histone-lysine N-methyltransferase 2A
+Macromolecule #9: WD repeat-containing protein 5
+Macromolecule #10: Set1/Ash2 histone methyltransferase complex subunit ASH2
+Macromolecule #5: DNA (145-MER)
+Macromolecule #6: DNA (145-MER)
+Macromolecule #11: S-ADENOSYL-L-HOMOCYSTEINE
+Macromolecule #12: ZINC ION
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.5 |
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Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy |
Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 45.0 e/Å2 |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Startup model | Type of model: NONE |
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Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |
Final reconstruction | Applied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 4.5 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 31882 |