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- EMDB-29767: H2BK120ub+H3K79me2-modified nucleosome ubiquitin position 5 -

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ID or keywords:

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Basic information

Entry
Database: EMDB / ID: EMD-29767
TitleH2BK120ub+H3K79me2-modified nucleosome ubiquitin position 5
Map dataSharpened Map
Sample
  • Complex: H2BK120ub+H3K79me2-modified nucleosome
    • Protein or peptide: Histone H3
    • Protein or peptide: Histone H4
    • Protein or peptide: Histone H2A
    • Protein or peptide: Histone H2B 1.1
    • DNA: 601 DNA (185-MER)
    • DNA: 601 DNA (185-MER)
    • Protein or peptide: Ubiquitin
Keywordsnucleosome / ubiquitin / histone / chromatin / DNA BINDING PROTEIN / DNA BINDING PROTEIN-DNA complex
Function / homology
Function and homology information


symbiont entry into host cell via disruption of host cell glycocalyx / symbiont entry into host cell via disruption of host cell envelope / virus tail / structural constituent of chromatin / nucleosome / heterochromatin formation / nucleosome assembly / protein heterodimerization activity / DNA binding / nucleus
Similarity search - Function
Pectate lyase superfamily protein / Rhamnogalacturonase A/epimerase, pectate lyase-like / Pectin lyase fold / Pectin lyase fold/virulence factor / : / Histone H2B signature. / Histone H2A conserved site / Histone H2A signature. / Histone H2B / Histone H2B ...Pectate lyase superfamily protein / Rhamnogalacturonase A/epimerase, pectate lyase-like / Pectin lyase fold / Pectin lyase fold/virulence factor / : / 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 / Histone-fold
Similarity search - Domain/homology
Histone H3 / Histone H2B 1.1 / Tail fiber / Histone H4 / Histone H2A
Similarity search - Component
Biological speciesXenopus laevis (African clawed frog) / Homo sapiens (human) / synthetic construct (others)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.93 Å
AuthorsHicks CW / Wolberger C / Keogh M
Funding support United States, 2 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)5R35GM130393 United States
National Institutes of Health/National Cancer Institute (NIH/NCI)F31CA261154 United States
CitationJournal: Nucleic Acids Res / Year: 2024
Title: Ubiquitinated histone H2B as gatekeeper of the nucleosome acidic patch.
Authors: Chad W Hicks / Sanim Rahman / Susan L Gloor / James K Fields / Natalia Ledo Husby / Anup Vaidya / Keith E Maier / Michael Morgan / Michael-Christopher Keogh / Cynthia Wolberger /
Abstract: Monoubiquitination of histones H2B-K120 (H2BK120ub) and H2A-K119 (H2AK119ub) play opposing roles in regulating transcription and chromatin compaction. H2BK120ub is a hallmark of actively transcribed ...Monoubiquitination of histones H2B-K120 (H2BK120ub) and H2A-K119 (H2AK119ub) play opposing roles in regulating transcription and chromatin compaction. H2BK120ub is a hallmark of actively transcribed euchromatin, while H2AK119ub is highly enriched in transcriptionally repressed heterochromatin. Whereas H2BK120ub is known to stimulate the binding or activity of various chromatin-modifying enzymes, this post-translational modification (PTM) also interferes with the binding of several proteins to the nucleosome H2A/H2B acidic patch via an unknown mechanism. Here, we report cryoEM structures of an H2BK120ub nucleosome showing that ubiquitin adopts discrete positions that occlude the acidic patch. Molecular dynamics simulations show that ubiquitin remains stably positioned over this nucleosome region. By contrast, our cryoEM structures of H2AK119ub nucleosomes show ubiquitin adopting discrete positions that minimally occlude the acidic patch. Consistent with these observations, H2BK120ub, but not H2AK119ub, abrogates nucleosome interactions with acidic patch-binding proteins RCC1 and LANA, and single-domain antibodies specific to this region. Our results suggest a mechanism by which H2BK120ub serves as a gatekeeper to the acidic patch and point to distinct roles for histone H2AK119 and H2BK120 ubiquitination in regulating protein binding to nucleosomes.
History
DepositionFeb 15, 2023-
Header (metadata) releaseFeb 21, 2024-
Map releaseFeb 21, 2024-
UpdateSep 25, 2024-
Current statusSep 25, 2024Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_29767.png

Downloads & links

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Map

FileDownload / File: emd_29767.map.gz / Format: CCP4 / Size: 125 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationSharpened Map
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.87 Å/pix.
x 320 pix.
= 279.04 Å		0.87 Å/pix.
x 320 pix.
= 279.04 Å		0.87 Å/pix.
x 320 pix.
= 279.04 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.872 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.08
Minimum - Maximum-0.62844425 - 1.2487036
Average (Standard dev.)0.0015987303 (±0.021628466)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions320320320
Spacing320320320
CellA=B=C: 279.03998 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_29767_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Additional map: Unsharpened Map

Fileemd_29767_additional_1.map
AnnotationUnsharpened Map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Half Map B

Fileemd_29767_half_map_1.map
AnnotationHalf Map B
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Half Map A

Fileemd_29767_half_map_2.map
AnnotationHalf Map A
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : H2BK120ub+H3K79me2-modified nucleosome

EntireName: H2BK120ub+H3K79me2-modified nucleosome
Components
  • Complex: H2BK120ub+H3K79me2-modified nucleosome
    • Protein or peptide: Histone H3
    • Protein or peptide: Histone H4
    • Protein or peptide: Histone H2A
    • Protein or peptide: Histone H2B 1.1
    • DNA: 601 DNA (185-MER)
    • DNA: 601 DNA (185-MER)
    • Protein or peptide: Ubiquitin

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Supramolecule #1: H2BK120ub+H3K79me2-modified nucleosome

SupramoleculeName: H2BK120ub+H3K79me2-modified nucleosome / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#7
Source (natural)Organism: Xenopus laevis (African clawed frog)

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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: 15.430106 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MARTKQTARK STGGKAPRKQ LATKAARKSA PATGGVKKPH RYRPGTVALR EIRRYQKSTE LLIRKLPFQR LVREIAQDF (MLY)TDLRFQSSA VMALQEASEA YLVALFEDTN LAAIHAKRVT 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: Xenopus laevis (African clawed frog)
Molecular weightTheoretical: 11.394426 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MSGRGKGGKG LGKGGAKRHR KVLRDNIQGI TKPAIRRLAR RGGVKRISGL IYEETRGVLK VFLENVIRDA VTYTEHAKRK TVTAMDVVY ALKRQGRTLY GFGG

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: Xenopus laevis (African clawed frog)
Molecular weightTheoretical: 14.109436 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MSGRGKQGGK TRAKAKTRSS RAGLQFPVGR VHRLLRKGNY AERVGAGAPV YLAAVLEYLT AEILELAGNA ARDNKKTRII PRHLQLAVR NDEELNKLLG RVTIAQGGVL PNIQSVLLPK KTESSKSAKS K

UniProtKB: Histone H2A

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Macromolecule #4: Histone H2B 1.1

MacromoleculeName: Histone H2B 1.1 / type: protein_or_peptide / ID: 4 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Xenopus laevis (African clawed frog)
Molecular weightTheoretical: 13.629911 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MAKSAPAPKK GSKKAVTKTQ KKDGKKRRKT RKESYAIYVY KVLKQVHPDT GISSKAMSIM NSFVNDVFER IAGEASRLAH YNKRSTITS REIQTAVRLL LPGELAKHAV SEGTKAVTCY TSAK

UniProtKB: Histone H2B 1.1

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Macromolecule #7: Ubiquitin

MacromoleculeName: Ubiquitin / type: protein_or_peptide / ID: 7 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 9.036393 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
GSHMMQIFVK TLTGKTITLE VEPSDTIENV KAKIQDKEGI PPDQQRLIFA GKQLEDGRTL SDYNIQKEST LHLVLRLRGC

UniProtKB: Tail fiber

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Macromolecule #5: 601 DNA (185-MER)

MacromoleculeName: 601 DNA (185-MER) / type: dna / ID: 5 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 56.79616 KDa
SequenceString: (DG)(DA)(DC)(DC)(DC)(DT)(DA)(DT)(DA)(DC) (DG)(DC)(DG)(DG)(DC)(DC)(DG)(DC)(DC)(DC) (DA)(DT)(DC)(DA)(DG)(DA)(DA)(DT)(DC) (DC)(DC)(DG)(DG)(DT)(DG)(DC)(DC)(DG)(DA) (DG) (DG)(DC)(DC)(DG)(DC)(DT) ...String:
(DG)(DA)(DC)(DC)(DC)(DT)(DA)(DT)(DA)(DC) (DG)(DC)(DG)(DG)(DC)(DC)(DG)(DC)(DC)(DC) (DA)(DT)(DC)(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) (DG)(DA)(DT)(DT)(DG)(DC)(DC)(DG)(DG)(DT) (DC)(DG)(DC)(DG)(DA)(DA)(DC)(DA) (DG) (DC)(DG)(DA)(DC)

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Macromolecule #6: 601 DNA (185-MER)

MacromoleculeName: 601 DNA (185-MER) / type: dna / ID: 6 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 57.440531 KDa
SequenceString: (DG)(DT)(DC)(DG)(DC)(DT)(DG)(DT)(DT)(DC) (DG)(DC)(DG)(DA)(DC)(DC)(DG)(DG)(DC)(DA) (DA)(DT)(DC)(DG)(DA)(DT)(DG)(DT)(DA) (DT)(DA)(DT)(DA)(DT)(DC)(DT)(DG)(DA)(DC) (DA) (DC)(DG)(DT)(DG)(DC)(DC) ...String:
(DG)(DT)(DC)(DG)(DC)(DT)(DG)(DT)(DT)(DC) (DG)(DC)(DG)(DA)(DC)(DC)(DG)(DG)(DC)(DA) (DA)(DT)(DC)(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) (DG)(DA)(DT)(DG)(DG)(DG)(DC)(DG)(DG)(DC) (DC)(DG)(DC)(DG)(DT)(DA)(DT)(DA) (DG) (DG)(DG)(DT)(DC)

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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: 7.5
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 1.75 µm / Nominal defocus min: 0.75 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: NONE
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.93 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 818874
Initial angle assignmentType: RANDOM ASSIGNMENT
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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