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Yorodumi- EMDB-4704: Structure of LSD2/NPAC-linker/nucleosome core particle complex: C... -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-4704 | |||||||||
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Title | Structure of LSD2/NPAC-linker/nucleosome core particle complex: Class 1, free nuclesome | |||||||||
Map data | nucleosome Class 1 | |||||||||
Sample |
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Keywords | Histone demethylation / chromatin reader / flavoenzyme / epigenetics / evolution of protein function / molecular recognition. / GENE REGULATION | |||||||||
Function / homology | Function and homology information structural constituent of chromatin / nucleosome / nucleosome assembly / protein heterodimerization activity / DNA binding / nucleoplasm / nucleus Similarity search - Function | |||||||||
Biological species | Xenopus laevis (African clawed frog) / synthetic construct (others) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 4.02 Å | |||||||||
Authors | Marabelli C / Pilotto S | |||||||||
Funding support | Italy, 1 items
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Citation | Journal: Cell Rep / Year: 2019 Title: A Tail-Based Mechanism Drives Nucleosome Demethylation by the LSD2/NPAC Multimeric Complex. Authors: Chiara Marabelli / Biagina Marrocco / Simona Pilotto / Sagar Chittori / Sarah Picaud / Sara Marchese / Giuseppe Ciossani / Federico Forneris / Panagis Filippakopoulos / Guy Schoehn / Daniela ...Authors: Chiara Marabelli / Biagina Marrocco / Simona Pilotto / Sagar Chittori / Sarah Picaud / Sara Marchese / Giuseppe Ciossani / Federico Forneris / Panagis Filippakopoulos / Guy Schoehn / Daniela Rhodes / Sriram Subramaniam / Andrea Mattevi / Abstract: LSD1 and LSD2 are homologous histone demethylases with opposite biological outcomes related to chromatin silencing and transcription elongation, respectively. Unlike LSD1, LSD2 nucleosome-demethylase ...LSD1 and LSD2 are homologous histone demethylases with opposite biological outcomes related to chromatin silencing and transcription elongation, respectively. Unlike LSD1, LSD2 nucleosome-demethylase activity relies on a specific linker peptide from the multidomain protein NPAC. We used single-particle cryoelectron microscopy (cryo-EM), in combination with kinetic and mutational analysis, to analyze the mechanisms underlying the function of the human LSD2/NPAC-linker/nucleosome complex. Weak interactions between LSD2 and DNA enable multiple binding modes for the association of the demethylase to the nucleosome. The demethylase thereby captures mono- and dimethyl Lys4 of the H3 tail to afford histone demethylation. Our studies also establish that the dehydrogenase domain of NPAC serves as a catalytically inert oligomerization module. While LSD1/CoREST forms a nucleosome docking platform at silenced gene promoters, LSD2/NPAC is a multifunctional enzyme complex with flexible linkers, tailored for rapid chromatin modification, in conjunction with the advance of the RNA polymerase on actively transcribed genes. | |||||||||
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_4704.map.gz | 63.1 MB | EMDB map data format | |
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Header (meta data) | emd-4704-v30.xml emd-4704.xml | 19.9 KB 19.9 KB | Display Display | EMDB header |
Images | emd_4704.png | 168.5 KB | ||
Filedesc metadata | emd-4704.cif.gz | 7 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-4704 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-4704 | HTTPS FTP |
-Validation report
Summary document | emd_4704_validation.pdf.gz | 217.8 KB | Display | EMDB validaton report |
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Full document | emd_4704_full_validation.pdf.gz | 216.9 KB | Display | |
Data in XML | emd_4704_validation.xml.gz | 6.4 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-4704 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-4704 | HTTPS FTP |
-Related structure data
Related structure data | 6r1tMC 4705C 4710C 4711C 4712C 6r1uC 6r25C 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_4704.map.gz / Format: CCP4 / Size: 103 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | nucleosome Class 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.06 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 : 147 bp nucleosome
Entire | Name: 147 bp nucleosome |
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Components |
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-Supramolecule #1: 147 bp nucleosome
Supramolecule | Name: 147 bp nucleosome / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all Details: Xenopus laevis histones recombinantly expressed. Alkylated K4C-C110A H3. 601 Widom DNA sequence. |
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Molecular weight | Theoretical: 198.66 KDa |
-Supramolecule #2: Histones
Supramolecule | Name: Histones / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1-#4 |
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Source (natural) | Organism: Xenopus laevis (African clawed frog) |
-Supramolecule #3: Widom DNA
Supramolecule | Name: Widom DNA / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #5-#6 |
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Source (natural) | Organism: synthetic construct (others) |
-Macromolecule #1: Histone H3
Macromolecule | Name: Histone H3 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO |
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Source (natural) | Organism: Xenopus laevis (African clawed frog) |
Molecular weight | Theoretical: 11.631616 KDa |
Recombinant expression | Organism: Escherichia coli (E. coli) |
Sequence | String: KPHRYRPGTV ALREIRRYQK STELLIRKLP FQRLVREIAQ DFKTDLRFQS SAVMALQEAS EAYLVALFED TNLCAIHAKR VTIMPKDIQ LARRIRGERA UniProtKB: Histone H3 |
-Macromolecule #2: HISTONE H2A
Macromolecule | Name: HISTONE H2A / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO |
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Source (natural) | Organism: Xenopus laevis (African clawed frog) |
Molecular weight | Theoretical: 9.99077 KDa |
Recombinant expression | Organism: Escherichia coli (E. coli) |
Sequence | String: KRHRKVLRDN IQGITKPAIR RLARRGGVKR ISGLIYEETR GVLKVFLENV IRDAVTYTEH AKRKTVTAMD VVYALKRQGR TLYGFGG |
-Macromolecule #3: Histone H2A
Macromolecule | Name: Histone H2A / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO |
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Source (natural) | Organism: Xenopus laevis (African clawed frog) |
Molecular weight | Theoretical: 12.183232 KDa |
Recombinant expression | Organism: Escherichia coli (E. coli) |
Sequence | String: TRAKAKTRSS RAGLQFPVGR VHRLLRKGNY AERVGAGAPV YLAAVLEYLT AEILELAGNA ARDNKKTRII PRHLQLAVRN DEELNKLLG RVTIAQGGVL PNIQSVLLPK KT UniProtKB: Histone H2A |
-Macromolecule #4: Histone H2B
Macromolecule | Name: Histone H2B / type: protein_or_peptide / ID: 4 / Number of copies: 2 / Enantiomer: LEVO |
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Source (natural) | Organism: Xenopus laevis (African clawed frog) |
Molecular weight | Theoretical: 10.792419 KDa |
Recombinant expression | Organism: Escherichia coli (E. coli) |
Sequence | String: RRKTRKESYA IYVYKVLKQV HPDTGISSKA MSIMNSFVND VFERIAGEAS RLAHYNKRST ITSREIQTAV RLLLPGELAK HAVSEGTKA VTKYTSA UniProtKB: Histone H2B |
-Macromolecule #5: DNA (147-MER)
Macromolecule | Name: DNA (147-MER) / type: dna / ID: 5 / Number of copies: 1 / Classification: DNA |
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Source (natural) | Organism: synthetic construct (others) |
Molecular weight | Theoretical: 45.610043 KDa |
Sequence | String: (DA)(DT)(DC)(DG)(DG)(DA)(DT)(DG)(DT)(DA) (DT)(DA)(DT)(DA)(DT)(DC)(DT)(DG)(DA)(DC) (DA)(DC)(DG)(DT)(DG)(DC)(DC)(DT)(DG) (DG)(DA)(DG)(DA)(DC)(DT)(DA)(DG)(DG)(DG) (DA) (DG)(DT)(DA)(DA)(DT)(DC) ...String: (DA)(DT)(DC)(DG)(DG)(DA)(DT)(DG)(DT)(DA) (DT)(DA)(DT)(DA)(DT)(DC)(DT)(DG)(DA)(DC) (DA)(DC)(DG)(DT)(DG)(DC)(DC)(DT)(DG) (DG)(DA)(DG)(DA)(DC)(DT)(DA)(DG)(DG)(DG) (DA) (DG)(DT)(DA)(DA)(DT)(DC)(DC)(DC) (DC)(DT)(DT)(DG)(DG)(DC)(DG)(DG)(DT)(DT) (DA)(DA) (DA)(DA)(DC)(DG)(DC)(DG)(DG) (DG)(DG)(DG)(DA)(DC)(DA)(DG)(DC)(DG)(DC) (DG)(DT)(DA) (DC)(DG)(DT)(DG)(DC)(DG) (DT)(DT)(DT)(DA)(DA)(DG)(DC)(DG)(DG)(DT) (DG)(DC)(DT)(DA) (DG)(DA)(DG)(DC)(DT) (DG)(DT)(DC)(DT)(DA)(DC)(DG)(DA)(DC)(DC) (DA)(DA)(DT)(DT)(DG) (DA)(DG)(DC)(DG) (DG)(DC)(DC)(DT)(DC)(DG)(DG)(DC)(DA)(DC) (DC)(DG)(DG)(DG)(DA)(DT) (DT)(DC)(DT) (DC)(DG)(DA)(DT) |
-Macromolecule #6: DNA (147-MER)
Macromolecule | Name: DNA (147-MER) / type: dna / ID: 6 / Number of copies: 1 / Classification: DNA |
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Source (natural) | Organism: synthetic construct (others) |
Molecular weight | Theoretical: 45.13877 KDa |
Sequence | String: (DA)(DT)(DC)(DG)(DA)(DG)(DA)(DA)(DT)(DC) (DC)(DC)(DG)(DG)(DT)(DG)(DC)(DC)(DG)(DA) (DG)(DG)(DC)(DC)(DG)(DC)(DT)(DC)(DA) (DA)(DT)(DT)(DG)(DG)(DT)(DC)(DG)(DT)(DA) (DG) (DA)(DC)(DA)(DG)(DC)(DT) ...String: (DA)(DT)(DC)(DG)(DA)(DG)(DA)(DA)(DT)(DC) (DC)(DC)(DG)(DG)(DT)(DG)(DC)(DC)(DG)(DA) (DG)(DG)(DC)(DC)(DG)(DC)(DT)(DC)(DA) (DA)(DT)(DT)(DG)(DG)(DT)(DC)(DG)(DT)(DA) (DG) (DA)(DC)(DA)(DG)(DC)(DT)(DC)(DT) (DA)(DG)(DC)(DA)(DC)(DC)(DG)(DC)(DT)(DT) (DA)(DA) (DA)(DC)(DG)(DC)(DA)(DC)(DG) (DT)(DA)(DC)(DG)(DC)(DG)(DC)(DT)(DG)(DT) (DC)(DC)(DC) (DC)(DC)(DG)(DC)(DG)(DT) (DT)(DT)(DT)(DA)(DA)(DC)(DC)(DG)(DC)(DC) (DA)(DA)(DG)(DG) (DG)(DG)(DA)(DT)(DT) (DA)(DC)(DT)(DC)(DC)(DC)(DT)(DA)(DG)(DT) (DC)(DT)(DC)(DC)(DA) (DG)(DG)(DC)(DA) (DC)(DG)(DT)(DG)(DT)(DC)(DA)(DG)(DA)(DT) (DA)(DT)(DA)(DT)(DA)(DC) (DA)(DT)(DC) (DC)(DG)(DA)(DT) |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Concentration | 0.87 mg/mL | |||||||||
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Buffer | pH: 7.5 Component:
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Grid | Model: Quantifoil R2/1 / Material: COPPER / Mesh: 400 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 300 sec. | |||||||||
Vitrification | Cryogen name: ETHANE | |||||||||
Details | LSD2/NPAC(214-225)/nucleosome was monodisperse (gel filtration peak isolation and concentration in buffer described. |
-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 / Number grids imaged: 1 / Number real images: 2078 / Average exposure time: 8.0 sec. / Average electron dose: 1.25 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 0.0030499999999999998 µm / Nominal defocus min: 0.0007 µm / Nominal magnification: 130000 |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |