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Open data
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Basic information
Entry | Database: PDB / ID: 9dde | ||||||||||||
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Title | ncPRC1RYBP bound to H2AK119Ub/H1.4 chromatosome | ||||||||||||
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![]() | Gene Regulation/DNA / DNA complex protein / Gene Regulation-DNA complex | ||||||||||||
Function / homology | ![]() regulation of adaxial/abaxial pattern formation / histone H2AK119 ubiquitin ligase activity / RING-like zinc finger domain binding / PRC1 complex / regulation of kidney development / segment specification / sex chromatin / rostrocaudal neural tube patterning / ubiquitin-protein transferase activator activity / somatic stem cell division ...regulation of adaxial/abaxial pattern formation / histone H2AK119 ubiquitin ligase activity / RING-like zinc finger domain binding / PRC1 complex / regulation of kidney development / segment specification / sex chromatin / rostrocaudal neural tube patterning / ubiquitin-protein transferase activator activity / somatic stem cell division / embryonic skeletal system morphogenesis / positive regulation of immature T cell proliferation in thymus / PcG protein complex / negative regulation of DNA recombination / SUMOylation of DNA methylation proteins / Apoptosis induced DNA fragmentation / gastrulation with mouth forming second / SUMOylation of RNA binding proteins / hypothalamus gonadotrophin-releasing hormone neuron development / chromosome condensation / anterior/posterior axis specification / female meiosis I / positive regulation of protein monoubiquitination / positive regulation of ubiquitin-protein transferase activity / nucleosomal DNA binding / mitochondrion transport along microtubule / fat pad development / Formation of Senescence-Associated Heterochromatin Foci (SAHF) / DNA methylation-dependent constitutive heterochromatin formation / female gonad development / negative regulation of gene expression, epigenetic / seminiferous tubule development / RUNX1 interacts with co-factors whose precise effect on RUNX1 targets is not known / Transcriptional Regulation by E2F6 / male meiosis I / germ cell development / hemopoiesis / MLL1 complex / negative regulation of apoptotic signaling pathway / humoral immune response / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / cellular response to interleukin-1 / ubiquitin ligase complex / heterochromatin / SUMOylation of DNA damage response and repair proteins / energy homeostasis / regulation of neuron apoptotic process / regulation of proteasomal protein catabolic process / Maturation of protein E / Maturation of protein E / negative regulation of proteasomal ubiquitin-dependent protein catabolic process / ER Quality Control Compartment (ERQC) / positive regulation of B cell proliferation / 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 / 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 / Regulation of FZD by ubiquitination / APC/C:Cdc20 mediated degradation of Cyclin B / Downregulation of ERBB4 signaling / p75NTR recruits signalling complexes / APC-Cdc20 mediated degradation of Nek2A / Regulation of innate immune responses to cytosolic DNA / TRAF6 mediated IRF7 activation in TLR7/8 or 9 signaling / InlA-mediated entry of Listeria monocytogenes into host cells / TRAF6-mediated induction of TAK1 complex within TLR4 complex / Regulation of pyruvate metabolism / cellular response to dexamethasone stimulus / NF-kB is activated and signals survival / 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 / SUMOylation of chromatin organization proteins / SUMOylation of transcription cofactors / neuron projection morphogenesis / Synthesis of active ubiquitin: roles of E1 and E2 enzymes / Regulation of BACH1 activity / TICAM1, RIP1-mediated IKK complex recruitment / MAP3K8 (TPL2)-dependent MAPK1/3 activation / Translesion synthesis by REV1 / Translesion synthesis by POLK / regulation of mitochondrial membrane potential Similarity search - Function | ||||||||||||
Biological species | ![]() synthetic construct (others) ![]() | ||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.2 Å | ||||||||||||
![]() | Godinez-Lopez, V. / Valencia-Sanchez, M.I. / Armache, J.P. / Armache, K.-J. | ||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Read-write mechanisms of H2A ubiquitination by Polycomb repressive complex 1. Authors: Victoria Godínez López / Marco Igor Valencia-Sánchez / Stephen Abini-Agbomson / Jonathan F Thomas / Rachel Lee / Pablo De Ioannes / Brian A Sosa / Jean-Paul Armache / Karim-Jean Armache / ![]() Abstract: Epigenetic inheritance of silent chromatin domains is fundamental to cellular memory during embryogenesis, but it must overcome the dilution of repressive histone modifications during DNA replication. ...Epigenetic inheritance of silent chromatin domains is fundamental to cellular memory during embryogenesis, but it must overcome the dilution of repressive histone modifications during DNA replication. One such modification, histone H2A lysine 119 monoubiquitination (H2AK119Ub), needs to be re-established by the Polycomb repressive complex 1 (PRC1) E3 ligase to restore the silent Polycomb domain. However, the exact mechanism behind this restoration remains unknown. Here, combining cryo-electron microscopy (cryo-EM) and functional approaches, we characterize the read-write mechanism of the non-canonical PRC1-containing RYBP (ncPRC1). This mechanism, which functions as a positive-feedback loop in epigenetic regulation, emphasizes the pivotal role of ncPRC1 in restoring H2AK119Ub. We observe an asymmetrical binding of ncPRC1 to H2AK119Ub nucleosomes, guided in part by the N-terminal zinc-finger domain of RYBP binding to residual H2AK119Ub on nascent chromatin. This recognition positions the RING domains of RING1B and BMI1 on the unmodified nucleosome side, enabling recruitment of the E2 enzyme to ubiquitinate H2AK119 within the same nucleosome (intra-nucleosome read-write) or across nucleosomes (inter-nucleosome read-write). Collectively, our findings provide key structural and mechanistic insights into the dynamic interplay of epigenetic regulation, highlighting the significance of ncPRC1 in H2AK119Ub restoration to sustain repressive chromatin domains. | ||||||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 425 KB | Display | ![]() |
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PDB format | ![]() | 313.3 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.1 MB | Display | ![]() |
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Full document | ![]() | 1.1 MB | Display | |
Data in XML | ![]() | 52.7 KB | Display | |
Data in CIF | ![]() | 81.5 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 46771MC ![]() 9dbyC ![]() 9dg3C ![]() 9dggC M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Components
-Protein , 9 types, 13 molecules AEBFCGDHKLMNO
#1: Protein | Mass: 15435.126 Da / Num. of mol.: 2 / Mutation: G103A Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #2: Protein | Mass: 11394.426 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #3: Protein | Mass: 14067.398 Da / Num. of mol.: 2 / Mutation: G100R, K119C Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #4: Protein | Mass: 13979.291 Da / Num. of mol.: 2 / Mutation: S33T Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #7: Protein | | Mass: 37006.062 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #8: Protein | | Mass: 37706.371 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() References: UniProt: Q99496, RING-type E3 ubiquitin transferase #9: Protein | | Mass: 24863.625 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #10: Protein | | Mass: 8622.922 Da / Num. of mol.: 1 / Mutation: G76C Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #11: Protein | | Mass: 21931.521 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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-DNA chain , 2 types, 2 molecules IJ
#5: DNA chain | Mass: 57982.918 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) synthetic construct (others) / Production host: ![]() ![]() |
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#6: DNA chain | Mass: 57488.551 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) synthetic construct (others) / Production host: ![]() ![]() |
-Non-polymers , 1 types, 5 molecules 
#12: Chemical | ChemComp-ZN / |
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-Details
Has ligand of interest | N |
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Has protein modification | N |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
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Buffer solution | pH: 7.5 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Specimen | Conc.: 0.1 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 298 K |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: TFS KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 1000 nm |
Image recording | Electron dose: 61.06 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) / Num. of real images: 7820 |
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Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 1394967 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 205635 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Atomic model building |
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