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- PDB-8g6h: H2BK120ub+H3K79me2-modified nucleosome ubiquitin position 6 -

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Basic information

Entry
Database: PDB / ID: 8g6h
TitleH2BK120ub+H3K79me2-modified nucleosome ubiquitin position 6
Components
  • (601 DNA (185- ...) x 2
  • Histone H2A
  • Histone H2B 1.1
  • Histone H3
  • Histone H4
  • Ubiquitin
KeywordsDNA BINDING PROTEIN/DNA / nucleosome / 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 / 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 / Membrane binding and targetting of GAG proteins / Endosomal Sorting Complex Required For Transport (ESCRT) / Regulation of TBK1, IKKε (IKBKE)-mediated activation of IRF3, IRF7 / Negative regulation of FLT3 / PTK6 Regulates RTKs and Their Effectors AKT1 and DOK1 / Constitutive Signaling by NOTCH1 HD Domain Mutants / Regulation of TBK1, IKKε-mediated activation of IRF3, IRF7 upon TLR3 ligation / 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 / Regulation of FZD by ubiquitination / Downregulation of ERBB4 signaling / p75NTR recruits signalling complexes / APC-Cdc20 mediated degradation of Nek2A / InlA-mediated entry of Listeria monocytogenes into host cells / TRAF6 mediated IRF7 activation in TLR7/8 or 9 signaling / Regulation of innate immune responses to cytosolic DNA / TRAF6-mediated induction of TAK1 complex within TLR4 complex / Regulation of pyruvate metabolism / NF-kB is activated and signals survival / Downregulation of ERBB2:ERBB3 signaling / Pexophagy / NRIF signals cell death from the nucleus / Regulation of PTEN localization / VLDLR internalisation and degradation / Activated NOTCH1 Transmits Signal to the Nucleus / neuron projection morphogenesis / Synthesis of active ubiquitin: roles of E1 and E2 enzymes / Regulation of BACH1 activity / MAP3K8 (TPL2)-dependent MAPK1/3 activation / regulation of mitochondrial membrane potential / TICAM1, RIP1-mediated IKK complex recruitment / Translesion synthesis by REV1 / Translesion synthesis by POLK / Activation of IRF3, IRF7 mediated by TBK1, IKKε (IKBKE) / InlB-mediated entry of Listeria monocytogenes into host cell / Downregulation of TGF-beta receptor signaling / Josephin domain DUBs / JNK (c-Jun kinases) phosphorylation and activation mediated by activated human TAK1 / Translesion synthesis by POLI / Regulation of activated PAK-2p34 by proteasome mediated degradation / positive regulation of protein ubiquitination / IKK complex recruitment mediated by RIP1 / Gap-filling DNA repair synthesis and ligation in GG-NER / 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 / 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 / SCF-beta-TrCP mediated degradation of Emi1 / NIK-->noncanonical NF-kB signaling / activated TAK1 mediates p38 MAPK activation / Negative regulators of DDX58/IFIH1 signaling / TNFR2 non-canonical NF-kB pathway / AUF1 (hnRNP D0) binds and destabilizes mRNA / Regulation of signaling by CBL / NOTCH3 Activation and Transmission of Signal to the Nucleus / Vpu mediated degradation of CD4 / Assembly of the pre-replicative complex / Ubiquitin Mediated Degradation of Phosphorylated Cdc25A / Degradation of DVL / Deactivation of the beta-catenin transactivating complex / Negative regulation of FGFR3 signaling / Cdc20:Phospho-APC/C mediated degradation of Cyclin A / Dectin-1 mediated noncanonical NF-kB signaling / Fanconi Anemia Pathway / Peroxisomal protein import / Degradation of AXIN / Regulation of TNFR1 signaling / Negative regulation of FGFR2 signaling
Similarity search - Function
: / Histone H2B signature. / Histone H2B / Histone H2B / Histone H2A conserved site / Histone H2A signature. / Histone H2A, C-terminal domain / C-terminus of histone H2A / Histone H2A / Histone 2A ...: / Histone H2B signature. / Histone H2B / Histone H2B / Histone H2A conserved site / Histone H2A signature. / Histone H2A, C-terminal domain / C-terminus of histone H2A / Histone H2A / Histone 2A / 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 / Ubiquitin domain signature. / Ubiquitin conserved site / Ubiquitin domain / Histone-fold / Ubiquitin family / Ubiquitin homologues / Ubiquitin domain profile. / Ubiquitin-like domain / Ubiquitin-like domain superfamily
Similarity search - Domain/homology
DNA / DNA (> 10) / DNA (> 100) / Histone H3 / Histone H2B 1.1 / Polyubiquitin-B / Histone H4 / Histone H2A
Similarity search - Component
Biological speciesXenopus laevis (African clawed frog)
synthetic construct (others)
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.06 Å
AuthorsHicks, C.W. / Wolberger, C. / Keogh, M.
Funding support United States, 2items
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, 2023Deposition site: RCSB / Processing site: RCSB
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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Histone H3
B: Histone H4
C: Histone H2A
D: Histone H2B 1.1
E: Histone H3
F: Histone H4
G: Histone H2A
H: Histone H2B 1.1
I: 601 DNA (185-MER)
J: 601 DNA (185-MER)
K: Ubiquitin


Theoretical massNumber of molelcules
Total (without water)232,40111
Polymers232,40111
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: native gel electrophoresis
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

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Protein , 5 types, 9 molecules AEBFCGDHK

#1: Protein Histone H3


Mass: 15430.106 Da / Num. of mol.: 2 / Mutation: K79(MLY), C110A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Gene: LOC121398065 / Production host: Escherichia coli (E. coli) / References: UniProt: A0A310TTQ1
#2: Protein Histone H4


Mass: 11394.426 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Production host: Escherichia coli (E. coli) / References: UniProt: P62799
#3: Protein Histone H2A


Mass: 14109.436 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Gene: hist1h2aj, LOC494591, XELAEV_18003602mg / Production host: Escherichia coli (E. coli) / References: UniProt: Q6AZJ8
#4: Protein Histone H2B 1.1 / H2B1.1


Mass: 13629.911 Da / Num. of mol.: 2 / Mutation: S33T, K120C
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Production host: Escherichia coli (E. coli) / References: UniProt: P02281
#7: Protein Ubiquitin


Mass: 9036.393 Da / Num. of mol.: 1 / Mutation: G76C
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: UBB / Production host: Escherichia coli (E. coli) / References: UniProt: P0CG47

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601 DNA (185- ... , 2 types, 2 molecules IJ

#5: DNA chain 601 DNA (185-MER)


Mass: 56796.160 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) synthetic construct (others) / Production host: Escherichia coli (E. coli)
#6: DNA chain 601 DNA (185-MER)


Mass: 57440.531 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) synthetic construct (others) / Production host: Escherichia coli (E. coli)

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Details

Has ligand of interestN
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: H2BK120ub+H3K79me2-modified nucleosome / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Source (natural)Organism: Xenopus laevis (African clawed frog)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 1750 nm / Nominal defocus min: 750 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM softwareName: PHENIX / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.06 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 282239 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00313842
ELECTRON MICROSCOPYf_angle_d0.51320050
ELECTRON MICROSCOPYf_dihedral_angle_d30.7924078
ELECTRON MICROSCOPYf_chiral_restr0.0322291
ELECTRON MICROSCOPYf_plane_restr0.0041450

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