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- EMDB-8938: Cryo-EM structure of nucleosome in complex with a single chain an... -

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Entry
Database: EMDB / ID: EMD-8938
TitleCryo-EM structure of nucleosome in complex with a single chain antibody fragment
Map data
Sample
  • Complex: Nucleosome-Antibody complex
    • Protein or peptide: Histone H3
    • Protein or peptide: Histone H4
    • Protein or peptide: Histone H2A
    • Protein or peptide: Histone H2B
    • DNA: DNA (147-MER)
    • DNA: DNA (147-MER)
    • Protein or peptide: scFv
KeywordsNucleosome / Single chain antibody / charge-charge interaction / acidic patch. / NUCLEAR PROTEIN
Function / homology
Function and homology information


HDMs demethylate histones / PKMTs methylate histone lysines / Interleukin-7 signaling / Chromatin modifying enzymes / Condensation of Prophase Chromosomes / SUMOylation of chromatin organization proteins / Metalloprotease DUBs / E3 ubiquitin ligases ubiquitinate target proteins / Factors involved in megakaryocyte development and platelet production / RCAF complex ...HDMs demethylate histones / PKMTs methylate histone lysines / Interleukin-7 signaling / Chromatin modifying enzymes / Condensation of Prophase Chromosomes / SUMOylation of chromatin organization proteins / Metalloprotease DUBs / E3 ubiquitin ligases ubiquitinate target proteins / Factors involved in megakaryocyte development and platelet production / RCAF complex / RMTs methylate histone arginines / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / polytene chromosome band / SIRT1 negatively regulates rRNA expression / NoRC negatively regulates rRNA expression / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / Formation of the beta-catenin:TCF transactivating complex / PRC2 methylates histones and DNA / HDACs deacetylate histones / Ub-specific processing proteases / RNA Polymerase I Promoter Escape / MLL4 and MLL3 complexes regulate expression of PPARG target genes in adipogenesis and hepatic steatosis / Regulation of endogenous retroelements by KRAB-ZFP proteins / larval somatic muscle development / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / Senescence-Associated Secretory Phenotype (SASP) / Transcriptional regulation by small RNAs / Estrogen-dependent gene expression / HATs acetylate histones / UCH proteinases / Assembly of the ORC complex at the origin of replication / Oxidative Stress Induced Senescence / polytene chromosome / nucleosomal DNA binding / nuclear chromosome / structural constituent of chromatin / nucleosome / heterochromatin formation / nucleosome assembly / chromosome / chromatin organization / protein heterodimerization activity / chromatin / protein-containing complex binding / DNA binding / 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 H4 / Histone H2A
Similarity search - Component
Biological speciesDrosophila melanogaster (fruit fly) / Mus musculus (house mouse) / Escherichia coli (E. coli)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.99 Å
AuthorsYadav KNS / Zhou B-R
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Cancer Institute (NIH/NCI)Intramural Research Program United States
CitationJournal: Nat Commun / Year: 2019
Title: Atomic resolution cryo-EM structure of a native-like CENP-A nucleosome aided by an antibody fragment.
Authors: Bing-Rui Zhou / K N Sathish Yadav / Mario Borgnia / Jingjun Hong / Baohua Cao / Ada L Olins / Donald E Olins / Yawen Bai / Ping Zhang /
Abstract: Genomic DNA in eukaryotes is organized into chromatin through association with core histones to form nucleosomes, each distinguished by their DNA sequences and histone variants. Here, we used a ...Genomic DNA in eukaryotes is organized into chromatin through association with core histones to form nucleosomes, each distinguished by their DNA sequences and histone variants. Here, we used a single-chain antibody fragment (scFv) derived from the anti-nucleosome antibody mAb PL2-6 to stabilize human CENP-A nucleosome containing a native α-satellite DNA and solved its structure by the cryo-electron microscopy (cryo-EM) to 2.6 Å resolution. In comparison, the corresponding cryo-EM structure of the free CENP-A nucleosome could only reach 3.4 Å resolution. We find that scFv binds to a conserved acidic patch on the histone H2A-H2B dimer without perturbing the nucleosome structure. Our results provide an atomic resolution cryo-EM structure of a nucleosome and insight into the structure and function of the CENP-A nucleosome. The scFv approach is applicable to the structural determination of other native-like nucleosomes with distinct DNA sequences.
History
DepositionJul 5, 2018-
Header (metadata) releaseOct 31, 2018-
Map releaseMay 22, 2019-
UpdateOct 23, 2024-
Current statusOct 23, 2024Processing site: RCSB / 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-6dzt
  • Surface level: 0.025
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_8938.png

Downloads & links

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Map

FileDownload / File: emd_8938.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.99 Å/pix.
x 256 pix.
= 254.106 Å		0.99 Å/pix.
x 256 pix.
= 254.106 Å		0.99 Å/pix.
x 256 pix.
= 254.106 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.9926 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.025 / Movie #1: 0.025
Minimum - Maximum-0.099544995 - 0.17028357
Average (Standard dev.)0.0000022051981 (±0.0054613072)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 254.1056 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z0.99260156250.99260156250.9926015625
M x/y/z256256256
origin x/y/z0.0000.0000.000
length x/y/z254.106254.106254.106
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ513513513
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS256256256
D min/max/mean-0.1000.1700.000

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Supplemental data

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Mask #1

Fileemd_8938_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_8938_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #2

Fileemd_8938_half_map_2.map
Projections & Slices
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Histogram (log scale)

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Sample components

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Entire : Nucleosome-Antibody complex

EntireName: Nucleosome-Antibody complex
Components
  • Complex: Nucleosome-Antibody complex
    • Protein or peptide: Histone H3
    • Protein or peptide: Histone H4
    • Protein or peptide: Histone H2A
    • Protein or peptide: Histone H2B
    • DNA: DNA (147-MER)
    • DNA: DNA (147-MER)
    • Protein or peptide: scFv

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Supramolecule #1: Nucleosome-Antibody complex

SupramoleculeName: Nucleosome-Antibody complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#7
Source (natural)Organism: Drosophila melanogaster (fruit fly)

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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: Drosophila melanogaster (fruit fly)
Molecular weightTheoretical: 15.421101 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MARTKQTARK STGGKAPRKQ LATKAARKSA PATGGVKKPH RYRPGTVALR EIRRYQKSTE LLIRKLPFQR LVREIAQDFK TDLRFQSSA VMALQEASEA YLVGLFEDTN LCAIHAKRVT IMPKDIQLAR RIRGERA

UniProtKB: Histone H3

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Macromolecule #2: Histone H4

MacromoleculeName: Histone H4 / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Drosophila melanogaster (fruit fly)
Molecular weightTheoretical: 11.521611 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MITGRGKGGK GLGKGGAKRH RKVLRDNIQG ITKPAIRRLA RRGGVKRISG LIYEETRGVL KVFLENVIRD AVTYTEHAKR KTVTAMDVV YALKRQGRTL YGFGG

UniProtKB: Histone H4

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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: Drosophila melanogaster (fruit fly)
Molecular weightTheoretical: 13.388727 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MSGRGKGGKV KGKAKSRSNR AGLQFPVGRI HRLLRKGNYA ERVGAGAPVY LAAVMEYLAA EVLELAGNAA RDNKKTRIIP RHLQLAIRN DEELNKLLSG VTIAQGGVLP NIQAVLLPKK TEKKA

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: Drosophila melanogaster (fruit fly)
Molecular weightTheoretical: 13.840224 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MIPPKTSGKA AKKAGKAQKN ITKTDKKKKR KRKESYAIYI YKVLKQVHPD TGISSKAMSI MNSFVNDIFE RIAAEASRLA HYNKRSTIT SREIQTAVRL LLPGELAKHA VSEGTKAVTK YTSSK

UniProtKB: Histone H2B

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Macromolecule #7: scFv

MacromoleculeName: scFv / type: protein_or_peptide / ID: 7 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Mus musculus (house mouse)
Molecular weightTheoretical: 29.030146 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MKSSHHHHHH ENLYFQSNAM EVQLQQSGPE LVEPGTSVKM PCKASGYTFT SYTIQWVKQT PRQGLEWIGY IYPYNAGTKY NEKFKGKAT LTSDKSSSTV YMELSSLTSE DSAVYYCARK SSRLRSTLDY WGQGTSVTVS SGGGGSGGGG SGGGGSMDIK M TQSPSSMH ...String:
MKSSHHHHHH ENLYFQSNAM EVQLQQSGPE LVEPGTSVKM PCKASGYTFT SYTIQWVKQT PRQGLEWIGY IYPYNAGTKY NEKFKGKAT LTSDKSSSTV YMELSSLTSE DSAVYYCARK SSRLRSTLDY WGQGTSVTVS SGGGGSGGGG SGGGGSMDIK M TQSPSSMH ASLGERVTIT CKASQDIRSY LSWYQQKPWK SPKTLIYYAT SLADGVPSRF SGSGSGQDFS LTINNLESDD TA TYYCLQH GESPYTFGSG TKLEIKRA

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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: Escherichia coli (E. coli)
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: Escherichia coli (E. coli)
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

BufferpH: 7.4
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 40.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: OTHER / Imaging mode: OTHER
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

3lz0


Details: input pdb models: 3LZ0, 1KX5, 2GKI
Final reconstructionNumber classes used: 2 / Applied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 2.99 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.0 beta) / Number images used: 238790
Initial angle assignmentType: NOT APPLICABLE
Final angle assignmentType: NOT APPLICABLE
FSC plot (resolution estimation)

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