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- EMDB-4704: Structure of LSD2/NPAC-linker/nucleosome core particle complex: C... -

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Basic information

Entry
Database: EMDB / ID: EMD-4704
TitleStructure of LSD2/NPAC-linker/nucleosome core particle complex: Class 1, free nuclesome
Map datanucleosome Class 1
Sample
  • Complex: 147 bp nucleosome
    • Complex: Histones
      • Protein or peptide: Histone H3
      • Protein or peptide: HISTONE H2A
      • Protein or peptide: Histone H2A
      • Protein or peptide: Histone H2B
    • Complex: Widom DNA
      • DNA: DNA (147-MER)
      • DNA: DNA (147-MER)
KeywordsHistone demethylation / chromatin reader / flavoenzyme / epigenetics / evolution of protein function / molecular recognition. / GENE REGULATION
Function / homology
Function and homology information


structural constituent of chromatin / nucleosome / heterochromatin formation / nucleosome assembly / protein heterodimerization activity / DNA binding / nucleoplasm / nucleus
Similarity search - Function
: / Histone H2B signature. / Histone H2A conserved site / Histone H2A signature. / Histone H2B / Histone H2B / Histone H2A, C-terminal domain / C-terminus of histone H2A / Histone 2A / Histone H2A ...: / Histone H2B signature. / Histone H2A conserved site / Histone H2A signature. / Histone H2B / Histone H2B / Histone H2A, C-terminal domain / C-terminus of histone H2A / Histone 2A / Histone H2A / TATA box binding protein associated factor / TATA box binding protein associated factor (TAF), histone-like fold domain / Histone H4, conserved site / Histone H4 signature. / Histone H4 / Histone H4 / CENP-T/Histone H4, histone fold / Centromere kinetochore component CENP-T histone fold / Histone H3 signature 1. / Histone H3 signature 2. / Histone H3 / Histone H3/CENP-A / Histone H2A/H2B/H3 / Core histone H2A/H2B/H3/H4 domain / Histone-fold
Similarity search - Domain/homology
Histone H2B / Histone H3 / Histone H2B 1.1 / Histone H2A type 1 / Histone H4 / Histone H3.2 / Histone H2A
Similarity search - Component
Biological speciesXenopus laevis (African clawed frog) / synthetic construct (others)
Methodsingle particle reconstruction / cryo EM / Resolution: 4.02 Å
AuthorsMarabelli C / Pilotto S
Funding support Italy, 1 items
OrganizationGrant numberCountry
Italian Association for Cancer ResearchIG-11342 Italy
CitationJournal: 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
DepositionMar 15, 2019-
Header (metadata) releaseApr 3, 2019-
Map releaseApr 24, 2019-
UpdateMay 15, 2024-
Current statusMay 15, 2024Processing site: PDBe / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.025
  • Imaged by UCSF Chimera
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  • Surface view colored by radius
  • Surface level: 0.025
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-6r1t
  • Surface level: 0.025
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_4704.png

Downloads & links

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Map

FileDownload / File: emd_4704.map.gz / Format: CCP4 / Size: 103 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationnucleosome Class 1
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.06 Å/pix.
x 300 pix.
= 318. Å		1.06 Å/pix.
x 300 pix.
= 318. Å		1.06 Å/pix.
x 300 pix.
= 318. Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.06 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.00636 / Movie #1: 0.025
Minimum - Maximum-0.031026183 - 0.08552891
Average (Standard dev.)0.00013662026 (±0.0029065362)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions300300300
Spacing300300300
CellA=B=C: 317.99997 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.061.061.06
M x/y/z300300300
origin x/y/z0.0000.0000.000
length x/y/z318.000318.000318.000
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS300300300
D min/max/mean-0.0310.0860.000

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Supplemental data

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Sample components

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Entire : 147 bp nucleosome

EntireName: 147 bp nucleosome
Components
  • Complex: 147 bp nucleosome
    • Complex: Histones
      • Protein or peptide: Histone H3
      • Protein or peptide: HISTONE H2A
      • Protein or peptide: Histone H2A
      • Protein or peptide: Histone H2B
    • Complex: Widom DNA
      • DNA: DNA (147-MER)
      • DNA: DNA (147-MER)

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Supramolecule #1: 147 bp nucleosome

SupramoleculeName: 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.
Molecular weightTheoretical: 198.66 KDa

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Supramolecule #2: Histones

SupramoleculeName: Histones / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1-#4
Source (natural)Organism: Xenopus laevis (African clawed frog)

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Supramolecule #3: Widom DNA

SupramoleculeName: Widom DNA / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #5-#6
Source (natural)Organism: synthetic construct (others)

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Macromolecule #1: Histone H3

MacromoleculeName: Histone H3 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Xenopus laevis (African clawed frog)
Molecular weightTheoretical: 11.631616 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
KPHRYRPGTV ALREIRRYQK STELLIRKLP FQRLVREIAQ DFKTDLRFQS SAVMALQEAS EAYLVALFED TNLCAIHAKR VTIMPKDIQ LARRIRGERA

UniProtKB: Histone H3

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Macromolecule #2: HISTONE H2A

MacromoleculeName: HISTONE H2A / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Xenopus laevis (African clawed frog)
Molecular weightTheoretical: 9.99077 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
KRHRKVLRDN IQGITKPAIR RLARRGGVKR ISGLIYEETR GVLKVFLENV IRDAVTYTEH AKRKTVTAMD VVYALKRQGR TLYGFGG

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Macromolecule #3: Histone H2A

MacromoleculeName: Histone H2A / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Xenopus laevis (African clawed frog)
Molecular weightTheoretical: 12.183232 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
TRAKAKTRSS RAGLQFPVGR VHRLLRKGNY AERVGAGAPV YLAAVLEYLT AEILELAGNA ARDNKKTRII PRHLQLAVRN DEELNKLLG RVTIAQGGVL PNIQSVLLPK KT

UniProtKB: Histone H2A

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Macromolecule #4: Histone H2B

MacromoleculeName: Histone H2B / type: protein_or_peptide / ID: 4 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Xenopus laevis (African clawed frog)
Molecular weightTheoretical: 10.792419 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
RRKTRKESYA IYVYKVLKQV HPDTGISSKA MSIMNSFVND VFERIAGEAS RLAHYNKRST ITSREIQTAV RLLLPGELAK HAVSEGTKA VTKYTSA

UniProtKB: Histone H2B

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Macromolecule #5: DNA (147-MER)

MacromoleculeName: DNA (147-MER) / type: dna / ID: 5 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 45.610043 KDa
SequenceString: (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)

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Macromolecule #6: DNA (147-MER)

MacromoleculeName: DNA (147-MER) / type: dna / ID: 6 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 45.13877 KDa
SequenceString: (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)

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

Concentration0.87 mg/mL
BufferpH: 7.5
Component:
ConcentrationFormulaName
20.0 mMC4H11NO3Tris
10.0 mMKClPotassium Chloride
GridModel: Quantifoil R2/1 / Material: COPPER / Mesh: 400 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 300 sec.
VitrificationCryogen name: ETHANE
DetailsLSD2/NPAC(214-225)/nucleosome was monodisperse (gel filtration peak isolation and concentration in buffer described.

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm 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 beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 0.0030499999999999998 µm / Nominal defocus min: 0.0007 µm / Nominal magnification: 130000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 490558
Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

6esf

Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 4.02 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.0) / Number images used: 124354
Initial angle assignmentType: OTHER
Final angle assignmentType: OTHER

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Atomic model buiding 1

Initial modelPDB ID:

6esf


Chain - Source name: PDB / Chain - Initial model type: experimental model
RefinementSpace: REAL / Protocol: RIGID BODY FIT
Output model

PDB-6r1t:
Structure of LSD2/NPAC-linker/nucleosome core particle complex: Class 1, free nuclesome

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