+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-0559 | |||||||||
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Title | Set2 bound to nucleosome | |||||||||
Map data | Set2 bound to the nucleosome | |||||||||
Sample |
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Function / homology | Function and homology information [histone H3]-lysine36 N-trimethyltransferase / histone H3K36 trimethyltransferase activity / ribosomal large subunit export from nucleus / modification-dependent protein catabolic process / structural constituent of chromatin / protein tag activity / nucleosome / nucleosome assembly / ribosome biogenesis / chromosome ...[histone H3]-lysine36 N-trimethyltransferase / histone H3K36 trimethyltransferase activity / ribosomal large subunit export from nucleus / modification-dependent protein catabolic process / structural constituent of chromatin / protein tag activity / nucleosome / nucleosome assembly / ribosome biogenesis / chromosome / ribosomal large subunit assembly / cytoplasmic translation / cytosolic large ribosomal subunit / methylation / protein ubiquitination / structural constituent of ribosome / protein heterodimerization activity / ubiquitin protein ligase binding / regulation of DNA-templated transcription / mitochondrion / DNA binding / nucleus / cytosol Similarity search - Function | |||||||||
Biological species | Chaetomium thermophilum (fungus) / synthetic construct (others) / Xenopus laevis (African clawed frog) / Chaetomium thermophilum (strain DSM 1495 / CBS 144.50 / IMI 039719) (fungus) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.8 Å | |||||||||
Authors | Halic M / Bilokapic S | |||||||||
Citation | Journal: Nat Commun / Year: 2019 Title: Nucleosome and ubiquitin position Set2 to methylate H3K36. Authors: Silvija Bilokapic / Mario Halic / Abstract: Histone H3 lysine 36 methylation (H3K36me) is a conserved histone modification deposited by the Set2 methyltransferases. Recent findings show that over-expression or mutation of Set2 enzymes promotes ...Histone H3 lysine 36 methylation (H3K36me) is a conserved histone modification deposited by the Set2 methyltransferases. Recent findings show that over-expression or mutation of Set2 enzymes promotes cancer progression, however, mechanisms of H3K36me are poorly understood. Set2 enzymes show spurious activity on histones and histone tails, and it is unknown how they obtain specificity to methylate H3K36 on the nucleosome. In this study, we present 3.8 Å cryo-EM structure of Set2 bound to the mimic of H2B ubiquitinated nucleosome. Our structure shows that Set2 makes extensive interactions with the H3 αN, the H3 tail, the H2A C-terminal tail and stabilizes DNA in the unwrapped conformation, which positions Set2 to specifically methylate H3K36. Moreover, we show that ubiquitin contributes to Set2 positioning on the nucleosome and stimulates the methyltransferase activity. Notably, our structure uncovers interfaces that can be targeted by small molecules for development of future cancer therapies. | |||||||||
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_0559.map.gz | 49.3 MB | EMDB map data format | |
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Header (meta data) | emd-0559-v30.xml emd-0559.xml | 19.4 KB 19.4 KB | Display Display | EMDB header |
Images | emd_0559.png | 123.2 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-0559 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-0559 | HTTPS FTP |
-Validation report
Summary document | emd_0559_validation.pdf.gz | 451.1 KB | Display | EMDB validaton report |
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Full document | emd_0559_full_validation.pdf.gz | 450.6 KB | Display | |
Data in XML | emd_0559_validation.xml.gz | 5.9 KB | Display | |
Data in CIF | emd_0559_validation.cif.gz | 6.7 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-0559 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-0559 | HTTPS FTP |
-Related structure data
Related structure data | 6nzoMC 6px1C 6px3C 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_0559.map.gz / Format: CCP4 / Size: 52.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | Set2 bound to the nucleosome | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.04 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Sample components
+Entire : Set2 nucleosome complex
+Supramolecule #1: Set2 nucleosome complex
+Supramolecule #2: Histone-lysine N-methyltransferase
+Supramolecule #3: DNA
+Supramolecule #4: Histone H3, Histone H4, Ubiquitin-60S ribosomal protein L40,Histo...
+Macromolecule #1: Histone H3
+Macromolecule #2: Histone H4
+Macromolecule #3: Ubiquitin-60S ribosomal protein L40,Histone H2A
+Macromolecule #4: Histone H2B 1.1
+Macromolecule #7: Histone-lysine N-methyltransferase
+Macromolecule #5: DNA (149-MER)
+Macromolecule #6: DNA (149-MER)
+Macromolecule #8: 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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Grid | Details: unspecified |
Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Average electron dose: 75.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Final reconstruction | Applied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 3.8 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 65000 |
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Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |