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Open data
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Basic information
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![]() | Lys63-linked dimer ubiquitin
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Function / homology | ![]() 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 ...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) / IRAK2 mediated activation of TAK1 complex upon TLR7/8 or 9 stimulation / PTK6 Regulates RTKs and Their Effectors AKT1 and DOK1 / Negative regulation of FLT3 / Constitutive Signaling by NOTCH1 HD Domain Mutants / Regulation of FZD by ubiquitination / TICAM1,TRAF6-dependent induction of TAK1 complex / NOTCH2 Activation and Transmission of Signal to the Nucleus / TICAM1-dependent activation of IRF3/IRF7 / APC/C:Cdc20 mediated degradation of Cyclin B / p75NTR recruits signalling complexes / Downregulation of ERBB4 signaling / APC-Cdc20 mediated degradation of Nek2A / PINK1-PRKN Mediated Mitophagy / TRAF6-mediated induction of TAK1 complex within TLR4 complex / TRAF6 mediated IRF7 activation in TLR7/8 or 9 signaling / Pexophagy / Regulation of innate immune responses to cytosolic DNA / InlA-mediated entry of Listeria monocytogenes into host cells / VLDLR internalisation and degradation / Downregulation of ERBB2:ERBB3 signaling / NF-kB is activated and signals survival / NRIF signals cell death from the nucleus / Regulation of PTEN localization / Activated NOTCH1 Transmits Signal to the Nucleus / Regulation of BACH1 activity / Translesion synthesis by REV1 / Synthesis of active ubiquitin: roles of E1 and E2 enzymes / Translesion synthesis by POLK / MAP3K8 (TPL2)-dependent MAPK1/3 activation / TICAM1, RIP1-mediated IKK complex recruitment / Downregulation of TGF-beta receptor signaling / Activation of IRF3, IRF7 mediated by TBK1, IKKε (IKBKE) / Translesion synthesis by POLI / Gap-filling DNA repair synthesis and ligation in GG-NER / Josephin domain DUBs / Regulation of activated PAK-2p34 by proteasome mediated degradation / InlB-mediated entry of Listeria monocytogenes into host cell / IKK complex recruitment mediated by RIP1 / JNK (c-Jun kinases) phosphorylation and activation mediated by activated human TAK1 / TGF-beta receptor signaling in EMT (epithelial to mesenchymal transition) / N-glycan trimming in the ER and Calnexin/Calreticulin cycle / Autodegradation of Cdh1 by Cdh1:APC/C / TNFR1-induced NF-kappa-B signaling pathway / APC/C:Cdc20 mediated degradation of Securin / Asymmetric localization of PCP proteins / TCF dependent signaling in response to WNT / SCF-beta-TrCP mediated degradation of Emi1 / AUF1 (hnRNP D0) binds and destabilizes mRNA / NIK-->noncanonical NF-kB signaling / Ubiquitin-dependent degradation of Cyclin D / Regulation of NF-kappa B signaling / TNFR2 non-canonical NF-kB pathway / activated TAK1 mediates p38 MAPK activation / Assembly of the pre-replicative complex / 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 / Degradation of DVL / Ubiquitin Mediated Degradation of Phosphorylated Cdc25A / Regulation of signaling by CBL / Dectin-1 mediated noncanonical NF-kB signaling / Cdc20:Phospho-APC/C mediated degradation of Cyclin A / Fanconi Anemia Pathway / Negative regulation of FGFR3 signaling / Hh mutants are degraded by ERAD / Recognition of DNA damage by PCNA-containing replication complex / Peroxisomal protein import / Degradation of AXIN / Downregulation of SMAD2/3:SMAD4 transcriptional activity / Degradation of GLI1 by the proteasome / Activation of NF-kappaB in B cells / Regulation of TNFR1 signaling / Negative regulation of FGFR2 signaling / Termination of translesion DNA synthesis / Negative regulation of FGFR4 signaling / Hedgehog ligand biogenesis / Defective CFTR causes cystic fibrosis / Stabilization of p53 / EGFR downregulation / Negative regulation of NOTCH4 signaling / Negative regulation of FGFR1 signaling / Iron uptake and transport / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / G2/M Checkpoints / SMAD2/SMAD3:SMAD4 heterotrimer regulates transcription / Vif-mediated degradation of APOBEC3G Similarity search - Function |
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![]() | ![]() Title: Lys63-linked ubiquitin chain adopts multiple conformational states for specific target recognition. Authors: Zhu Liu / Zhou Gong / Wen-Xue Jiang / Ju Yang / Wen-Kai Zhu / Da-Chuan Guo / Wei-Ping Zhang / Mai-Li Liu / Chun Tang / ![]() Abstract: A polyubiquitin comprises multiple covalently linked ubiquitins and recognizes myriad targets. Free or bound to ligands, polyubiquitins are found in different arrangements of ubiquitin subunits. To ...A polyubiquitin comprises multiple covalently linked ubiquitins and recognizes myriad targets. Free or bound to ligands, polyubiquitins are found in different arrangements of ubiquitin subunits. To understand the structural basis for polyubiquitin quaternary plasticity and to explore the target recognition mechanism, we characterize the conformational space of Lys63-linked diubiquitin (K63-Ub2). Refining against inter-subunit paramagnetic NMR data, we show that free K63-Ub2 exists as a dynamic ensemble comprising multiple closed and open quaternary states. The quaternary dynamics enables K63-Ub2 to be specifically recognized in a variety of signaling pathways. When binding to a target protein, one of the preexisting quaternary states is selected and stabilized. A point mutation that shifts the equilibrium between the different states modulates the binding affinities towards K63-Ub2 ligands. This conformational selection mechanism at the quaternary level may be used by polyubiquitins of different lengths and linkages for target recognition. |
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Structure visualization
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Downloads & links
-Data source
SASBDB page | ![]() |
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-Related structure data
Related structure data | ![]() 2n2kC C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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External links
Related items in Molecule of the Month |
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-Models
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Sample
![]() | Name: Lys63-linked dimer ubiquitin / Specimen concentration: 5.1 mg/ml |
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Buffer | Name: 100mM NaCl, 10mM sodium acetate / pH: 6 |
Entity #757 | Name: ubiquitin / Type: protein / Description: Polyubiquitin-C / Formula weight: 8.565 / Num. of mol.: 2 / Source: Homo sapiens / References: UniProt: P0CG48 Sequence: MQIFVKTLTG KTITLEVEPS DTIENVKAKI QDKEGIPPDQ QRLIFAGKQL EDGRTLSDYN IQKESTLHLV LRLRGG |
-Experimental information
Beam | Instrument name: Shanghai Synchrotron Radiation Facility (SSRF) BL19U2 City: Shanghai / 国: China ![]() | |||||||||||||||||||||||||||||||||
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Detector | Name: Pilatus 1M | |||||||||||||||||||||||||||||||||
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Distance distribution function P(R) |
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