histone H2AK15 ubiquitin ligase activity / histone ubiquitin ligase activity / positive regulation of transcription regulatory region DNA binding / negative regulation of DNA recombination / protein K6-linked ubiquitination / Signaling by BMP / (E3-independent) E2 ubiquitin-conjugating enzyme / Apoptosis induced DNA fragmentation / double-strand break repair via classical nonhomologous end joining / isotype switching ...histone H2AK15 ubiquitin ligase activity / histone ubiquitin ligase activity / positive regulation of transcription regulatory region DNA binding / negative regulation of DNA recombination / protein K6-linked ubiquitination / Signaling by BMP / (E3-independent) E2 ubiquitin-conjugating enzyme / Apoptosis induced DNA fragmentation / double-strand break repair via classical nonhomologous end joining / isotype switching / protein K11-linked ubiquitination / chromosome condensation / positive regulation of protein targeting to mitochondrion / nucleosomal DNA binding / Formation of the ternary complex, and subsequently, the 43S complex / E2 ubiquitin-conjugating enzyme / K63-linked polyubiquitin modification-dependent protein binding / Formation of Senescence-Associated Heterochromatin Foci (SAHF) / response to ionizing radiation / Ribosomal scanning and start codon recognition / Translation initiation complex formation / DNA repair-dependent chromatin remodeling / ubiquitin conjugating enzyme activity / minor groove of adenine-thymine-rich DNA binding / negative regulation of transcription elongation by RNA polymerase II / SARS-CoV-1 modulates host translation machinery / Peptide chain elongation / Selenocysteine synthesis / Formation of a pool of free 40S subunits / negative regulation of BMP signaling pathway / Eukaryotic Translation Termination / Response of EIF2AK4 (GCN2) to amino acid deficiency / SRP-dependent cotranslational protein targeting to membrane / protein K63-linked ubiquitination / Viral mRNA Translation / protein monoubiquitination / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / GTP hydrolysis and joining of the 60S ribosomal subunit / ubiquitin ligase complex / L13a-mediated translational silencing of Ceruloplasmin expression / Major pathway of rRNA processing in the nucleolus and cytosol / negative regulation of megakaryocyte differentiation / interstrand cross-link repair / protein localization to CENP-A containing chromatin / SUMOylation of DNA damage response and repair proteins / protein K48-linked ubiquitination / Chromatin modifying enzymes / Replacement of protamines by nucleosomes in the male pronucleus / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / CENP-A containing nucleosome / nucleosome binding / protein autoubiquitination / Packaging Of Telomere Ends / Recognition and association of DNA glycosylase with site containing an affected purine / Cleavage of the damaged purine / Maturation of protein E / Maturation of protein E / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / Deposition of new CENPA-containing nucleosomes at the centromere / cytosolic ribosome / ER Quality Control Compartment (ERQC) / transcription repressor complex / 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 / telomere organization / Membrane binding and targetting of GAG proteins / Endosomal Sorting Complex Required For Transport (ESCRT) / Regulation of TBK1, IKKε (IKBKE)-mediated activation of IRF3, IRF7 / Inhibition of DNA recombination at telomere / 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 / Meiotic synapsis / Interleukin-7 signaling / 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 / RNA Polymerase I Promoter Opening / 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 / Assembly of the ORC complex at the origin of replication / 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 / Regulation of innate immune responses to cytosolic DNA / NF-kB is activated and signals survival / Downregulation of ERBB2:ERBB3 signaling Similarity search - Function
E3 ubiquitin-protein ligase RNF168 / : / Prokaryotic RING finger family 4 / Linker histone H1/H5 / linker histone H1 and H5 family / Linker histone H1/H5, domain H15 / Linker histone H1/H5 globular (H15) domain profile. / Domain in histone families 1 and 5 / Ubiquitin-conjugating enzyme, active site / Ubiquitin-conjugating (UBC) active site signature. ...E3 ubiquitin-protein ligase RNF168 / : / Prokaryotic RING finger family 4 / Linker histone H1/H5 / linker histone H1 and H5 family / Linker histone H1/H5, domain H15 / Linker histone H1/H5 globular (H15) domain profile. / Domain in histone families 1 and 5 / Ubiquitin-conjugating enzyme, active site / Ubiquitin-conjugating (UBC) active site signature. / Ubiquitin-conjugating enzyme E2 / Ubiquitin-conjugating enzyme / Ubiquitin-conjugating (UBC) core domain profile. / Ubiquitin-conjugating enzyme E2, catalytic domain homologues / Ubiquitin-conjugating enzyme/RWD-like / S27a-like superfamily / Ribosomal protein S27a / Ribosomal protein S27a / Ribosomal protein S27a / Ring finger / 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. / Zinc finger RING-type profile. / Ribosomal protein S6, plastid/chloroplast / Zinc finger, RING-type / Histone H3 signature 2. / Histone H3 / Histone H3/CENP-A / : / Ribosomal protein S6 / Ribosomal protein S6 / Ribosomal protein S6 superfamily / Ubiquitin domain signature. / Histone H2A/H2B/H3 / Ubiquitin conserved site / Core histone H2A/H2B/H3/H4 / Translation elongation factor EF1B/ribosomal protein S6 / Ubiquitin domain / Histone-fold / Ubiquitin family / Ubiquitin homologues / Ubiquitin domain profile. / Ubiquitin-like domain / Zinc-binding ribosomal protein / Zinc finger, RING/FYVE/PHD-type / Ubiquitin-like domain superfamily / Winged helix DNA-binding domain superfamily / Winged helix-like DNA-binding domain superfamily Similarity search - Domain/homology
Small ribosomal subunit protein bS6c alpha / Histone H2A type 1-B/E / Histone H1.0 / Ubiquitin-conjugating enzyme E2 D3 / Histone H4 / Ubiquitin-ribosomal protein eS31 fusion protein / Histone H3.2 / E3 ubiquitin-protein ligase RNF168 Similarity search - Component
Biological species
Homo sapiens (human)
Method
single particle reconstruction / cryo EM / Resolution: 4.3 Å
National Natural Science Foundation of China (NSFC)
22137005, 92253302, 22227810
China
Citation
Journal: Angew Chem Int Ed Engl / Year: 2025 Title: Promotion of RNF168-Mediated Nucleosomal H2A Ubiquitylation by Structurally Defined K63-Polyubiquitylated Linker Histone H1. Authors: Qiang Shi / Zhiheng Deng / Liying Zhang / Zebin Tong / Jia-Bin Li / Guo-Chao Chu / Huasong Ai / Lei Liu / Abstract: The chemical synthesis of histones with homogeneous modifications is a powerful approach for quantitatively deciphering the functional crosstalk between different post-translational modifications ...The chemical synthesis of histones with homogeneous modifications is a powerful approach for quantitatively deciphering the functional crosstalk between different post-translational modifications (PTMs). In this study, we developed an expedient site-specific (poly)ubiquitylation strategy (CAEPL, Cysteine Aminoethylation coupled with Enzymatic Protein Ligation), which integrates the Cys-aminoethylation reaction with the process of ubiquitin-activating enzyme UBA1-assisted native chemical ligation. Using this strategy, we successfully prepared monoubiquitylated and K63-linked di- and tri-ubiquitylated linker histone H1.0 proteins, which were incorporated into individual chromatosomes. Quantitative biochemical analysis of different RNF168 constructs on H1 ubiquitylated chromatosomes with different ubiquitin chain lengths demonstrated that K63-linked polyubiquitylated H1.0 could directly stimulate RNF168 ubiquitylation activity by enhancing the affinity between RNF168 and the chromatosome. Subsequent cryo-EM structural analysis of the RNF168/UbcH5c-Ub/H1.0-K63-Ub chromatosome complex revealed the potential recruitment orientation between RNF168 UDM1 domain and K63-linked ubiquitin chain on H1.0. Finally, we explored the impact of H1.0 ubiquitylation on RNF168 activity in the context of asymmetric H1.0-K63-Ub di-nucleosome substrate, revealing a comparable stimulation effect of both the inter- and intra-nucleosomal crosstalk. Overall, our study highlights the significance of access to structurally defined polyubiquitylated H1.0 by the CAEPL strategy, enabling in-depth mechanistic investigations of in-trans PTM crosstalk between linker histone H1.0 and core histone H2A ubiquitylation.
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