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- EMDB-42899: H2BK120ub-modified nucleosome ubiquitin position 2 -

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Basic information

Entry
Database: EMDB / ID: EMD-42899
TitleH2BK120ub-modified nucleosome ubiquitin position 2
Map dataSharpened Map (locally filtered)
Sample
  • Complex: H2BK120ub-modified nucleosome
    • Complex: histones
      • Protein or peptide: Histone H3.2
      • Protein or peptide: Histone H4
      • Protein or peptide: Histone H2A
      • Protein or peptide: Histone H2B 1.1
    • Complex: DNA
      • DNA: 601 DNA (147-MER)
      • DNA: 601 DNA (147-MER)
    • Complex: ubiquitin
      • Protein or peptide: Ubiquitin
Keywordsnucleosome / ubiquitin / histone / chromatin / DNA BINDING PROTEIN / DNA BINDING PROTEIN-DNA complex
Function / homology
Function and homology information


hypothalamus gonadotrophin-releasing hormone neuron development / female meiosis I / positive regulation of protein monoubiquitination / fat pad development / mitochondrion transport along microtubule / female gonad development / seminiferous tubule development / male meiosis I / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / energy homeostasis ...hypothalamus gonadotrophin-releasing hormone neuron development / female meiosis I / positive regulation of protein monoubiquitination / fat pad development / mitochondrion transport along microtubule / female gonad development / seminiferous tubule development / male meiosis I / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / energy homeostasis / regulation of neuron apoptotic process / neuron projection morphogenesis / regulation of proteasomal protein catabolic process / Maturation of protein E / Maturation of protein E / ER Quality Control Compartment (ERQC) / Myoclonic epilepsy of Lafora / FLT3 signaling by CBL mutants / Prevention of phagosomal-lysosomal fusion / IRAK2 mediated activation of TAK1 complex / Alpha-protein kinase 1 signaling pathway / Glycogen synthesis / IRAK1 recruits IKK complex / IRAK1 recruits IKK complex upon TLR7/8 or 9 stimulation / Endosomal Sorting Complex Required For Transport (ESCRT) / Membrane binding and targetting of GAG proteins / Negative regulation of FLT3 / Regulation of TBK1, IKKε (IKBKE)-mediated activation of IRF3, IRF7 / PTK6 Regulates RTKs and Their Effectors AKT1 and DOK1 / Regulation of TBK1, IKKε-mediated activation of IRF3, IRF7 upon TLR3 ligation / Constitutive Signaling by NOTCH1 HD Domain Mutants / IRAK2 mediated activation of TAK1 complex upon TLR7/8 or 9 stimulation / NOTCH2 Activation and Transmission of Signal to the Nucleus / TICAM1,TRAF6-dependent induction of TAK1 complex / TICAM1-dependent activation of IRF3/IRF7 / APC/C:Cdc20 mediated degradation of Cyclin B / Downregulation of ERBB4 signaling / Regulation of FZD by ubiquitination / APC-Cdc20 mediated degradation of Nek2A / p75NTR recruits signalling complexes / InlA-mediated entry of Listeria monocytogenes into host cells / TRAF6 mediated IRF7 activation in TLR7/8 or 9 signaling / TRAF6-mediated induction of TAK1 complex within TLR4 complex / Regulation of pyruvate metabolism / NF-kB is activated and signals survival / Regulation of innate immune responses to cytosolic DNA / Downregulation of ERBB2:ERBB3 signaling / Pexophagy / NRIF signals cell death from the nucleus / VLDLR internalisation and degradation / Regulation of PTEN localization / Activated NOTCH1 Transmits Signal to the Nucleus / Regulation of BACH1 activity / Synthesis of active ubiquitin: roles of E1 and E2 enzymes / MAP3K8 (TPL2)-dependent MAPK1/3 activation / Translesion synthesis by REV1 / TICAM1, RIP1-mediated IKK complex recruitment / InlB-mediated entry of Listeria monocytogenes into host cell / Translesion synthesis by POLK / Activation of IRF3, IRF7 mediated by TBK1, IKKε (IKBKE) / Downregulation of TGF-beta receptor signaling / JNK (c-Jun kinases) phosphorylation and activation mediated by activated human TAK1 / Josephin domain DUBs / Translesion synthesis by POLI / Regulation of activated PAK-2p34 by proteasome mediated degradation / Gap-filling DNA repair synthesis and ligation in GG-NER / IKK complex recruitment mediated by RIP1 / positive regulation of protein ubiquitination / PINK1-PRKN Mediated Mitophagy / TGF-beta receptor signaling in EMT (epithelial to mesenchymal transition) / TNFR1-induced NF-kappa-B signaling pathway / Autodegradation of Cdh1 by Cdh1:APC/C / regulation of mitochondrial membrane potential / APC/C:Cdc20 mediated degradation of Securin / TCF dependent signaling in response to WNT / N-glycan trimming in the ER and Calnexin/Calreticulin cycle / Regulation of NF-kappa B signaling / Asymmetric localization of PCP proteins / Ubiquitin-dependent degradation of Cyclin D / activated TAK1 mediates p38 MAPK activation / SCF-beta-TrCP mediated degradation of Emi1 / NIK-->noncanonical NF-kB signaling / TNFR2 non-canonical NF-kB pathway / AUF1 (hnRNP D0) binds and destabilizes mRNA / Regulation of signaling by CBL / Vpu mediated degradation of CD4 / NOTCH3 Activation and Transmission of Signal to the Nucleus / Negative regulators of DDX58/IFIH1 signaling / Deactivation of the beta-catenin transactivating complex / Assembly of the pre-replicative complex / Ubiquitin-Mediated Degradation of Phosphorylated Cdc25A / Degradation of DVL / Negative regulation of FGFR3 signaling / Fanconi Anemia Pathway / Peroxisomal protein import / Dectin-1 mediated noncanonical NF-kB signaling / Cdc20:Phospho-APC/C mediated degradation of Cyclin A / Negative regulation of FGFR2 signaling / Stabilization of p53 / Negative regulation of FGFR4 signaling
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 / : / Ubiquitin domain signature. / Ubiquitin conserved site / Ubiquitin domain / Histone H2A/H2B/H3 / Core histone H2A/H2B/H3/H4 domain / Histone-fold / Ubiquitin family / Ubiquitin homologues / Ubiquitin domain profile. / Ubiquitin-like domain / Ubiquitin-like domain superfamily
Similarity search - Domain/homology
Histone H4 / Histone H2B 1.1 / Polyubiquitin-B / Histone H3.2 / Histone H2A
Similarity search - Component
Biological speciesXenopus laevis (African clawed frog) / synthetic construct (others) / Homo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.33 Å
AuthorsHicks CW / Wolberger C
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
DepositionNov 21, 2023-
Header (metadata) releaseAug 28, 2024-
Map releaseAug 28, 2024-
UpdateJun 4, 2025-
Current statusJun 4, 2025Processing site: RCSB / Status: Released

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Structure visualization

Downloads & links

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Map

FileDownload / File: emd_42899.map.gz / Format: CCP4 / Size: 75.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationSharpened Map (locally filtered)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.97 Å/pix.
x 270 pix.
= 261.9 Å		0.97 Å/pix.
x 270 pix.
= 261.9 Å		0.97 Å/pix.
x 270 pix.
= 261.9 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.97 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.11
Minimum - Maximum-0.29323134 - 0.6078046
Average (Standard dev.)0.0016851021 (±0.018794663)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions270270270
Spacing270270270
CellA=B=C: 261.9 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_42899_msk_1.map
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-modified nucleosome

EntireName: H2BK120ub-modified nucleosome
Components
  • Complex: H2BK120ub-modified nucleosome
    • Complex: histones
      • Protein or peptide: Histone H3.2
      • Protein or peptide: Histone H4
      • Protein or peptide: Histone H2A
      • Protein or peptide: Histone H2B 1.1
    • Complex: DNA
      • DNA: 601 DNA (147-MER)
      • DNA: 601 DNA (147-MER)
    • Complex: ubiquitin
      • Protein or peptide: Ubiquitin

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Supramolecule #1: H2BK120ub-modified nucleosome

SupramoleculeName: H2BK120ub-modified nucleosome / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#7

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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: DNA

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

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Supramolecule #4: ubiquitin

SupramoleculeName: ubiquitin / type: complex / ID: 4 / Parent: 1 / Macromolecule list: #7
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Histone H3.2

MacromoleculeName: Histone H3.2 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Xenopus laevis (African clawed frog)
Molecular weightTheoretical: 15.435126 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MARTKQTARK STGGKAPRKQ LATKAARKSA PATGGVKKPH RYRPGTVALR EIRRYQKSTE LLIRKLPFQR LVREIAQDFK TDLRFQSSA VMALQEASEA YLVALFEDTN LCAIHAKRVT IMPKDIQLAR RIRGERA

UniProtKB: Histone H3.2

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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: Polyubiquitin-B

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Macromolecule #5: 601 DNA (147-MER)

MacromoleculeName: 601 DNA (147-MER) / type: dna / ID: 5 / 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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Macromolecule #6: 601 DNA (147-MER)

MacromoleculeName: 601 DNA (147-MER) / type: dna / ID: 6 / 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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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: FEI FALCON IV (4k x 4k) / Average electron dose: 40.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.5 µm / Nominal defocus min: 0.5 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: NONE
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.33 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 71307
Initial angle assignmentType: RANDOM ASSIGNMENT
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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