cullin-RING-type E3 NEDD8 transferase / NEDD8 transferase activity / cullin-RING ubiquitin ligase complex / cellular response to chemical stress / Cul7-RING ubiquitin ligase complex / ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / target-directed miRNA degradation / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling / elongin complex / positive regulation of protein autoubiquitination ...cullin-RING-type E3 NEDD8 transferase / NEDD8 transferase activity / cullin-RING ubiquitin ligase complex / cellular response to chemical stress / Cul7-RING ubiquitin ligase complex / ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / target-directed miRNA degradation / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling / elongin complex / positive regulation of protein autoubiquitination / RNA polymerase II transcription initiation surveillance / protein neddylation / NEDD8 ligase activity / VCB complex / negative regulation of response to oxidative stress / microtubule motor activity / Cul5-RING ubiquitin ligase complex / microtubule associated complex / SCF ubiquitin ligase complex / Cul2-RING ubiquitin ligase complex / ubiquitin-ubiquitin ligase activity / negative regulation of type I interferon production / Cul4A-RING E3 ubiquitin ligase complex / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process / Cul4-RING E3 ubiquitin ligase complex / Cul3-RING ubiquitin ligase complex / Cul4B-RING E3 ubiquitin ligase complex / ubiquitin ligase complex scaffold activity / negative regulation of mitophagy / Prolactin receptor signaling / cullin family protein binding / Pausing and recovery of Tat-mediated HIV elongation / Tat-mediated HIV elongation arrest and recovery / HIV elongation arrest and recovery / Pausing and recovery of HIV elongation / protein monoubiquitination / Tat-mediated elongation of the HIV-1 transcript / Formation of HIV-1 elongation complex containing HIV-1 Tat / intracellular transport / ubiquitin-like ligase-substrate adaptor activity / Formation of HIV elongation complex in the absence of HIV Tat / protein K48-linked ubiquitination / RNA Polymerase II Transcription Elongation / Nuclear events stimulated by ALK signaling in cancer / Formation of RNA Pol II elongation complex / Regulation of BACH1 activity / transcription-coupled nucleotide-excision repair / RNA Polymerase II Pre-transcription Events / regulation of cellular response to insulin stimulus / positive regulation of TORC1 signaling / post-translational protein modification / intrinsic apoptotic signaling pathway / negative regulation of insulin receptor signaling pathway / cytoplasmic vesicle membrane / T cell activation / Degradation of DVL / Recognition of DNA damage by PCNA-containing replication complex / Degradation of GLI1 by the proteasome / transcription corepressor binding / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / Negative regulation of NOTCH4 signaling / Vif-mediated degradation of APOBEC3G / Hedgehog 'on' state / Degradation of GLI2 by the proteasome / GLI3 is processed to GLI3R by the proteasome / DNA Damage Recognition in GG-NER / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / cellular response to amino acid stimulus / TP53 Regulates Transcription of DNA Repair Genes / Inactivation of CSF3 (G-CSF) signaling / transcription initiation at RNA polymerase II promoter / intracellular protein transport / Degradation of beta-catenin by the destruction complex / transcription elongation by RNA polymerase II / Evasion by RSV of host interferon responses / Oxygen-dependent proline hydroxylation of Hypoxia-inducible Factor Alpha / NOTCH1 Intracellular Domain Regulates Transcription / Dual Incision in GG-NER / Transcription-Coupled Nucleotide Excision Repair (TC-NER) / Formation of TC-NER Pre-Incision Complex / Constitutive Signaling by NOTCH1 PEST Domain Mutants / Constitutive Signaling by NOTCH1 HD+PEST Domain Mutants / G1/S transition of mitotic cell cycle / negative regulation of canonical Wnt signaling pathway / Formation of Incision Complex in GG-NER / Regulation of expression of SLITs and ROBOs / RING-type E3 ubiquitin transferase / Interleukin-1 signaling / Orc1 removal from chromatin / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / Regulation of RAS by GAPs / Regulation of RUNX2 expression and activity / KEAP1-NFE2L2 pathway / protein polyubiquitination / ubiquitin-protein transferase activity / positive regulation of protein catabolic process / Antigen processing: Ubiquitination & Proteasome degradation / cellular response to UV / ubiquitin protein ligase activity 類似検索 - 分子機能
National Natural Science Foundation of China (NSFC)
中国
引用
ジャーナル: Proc Natl Acad Sci U S A / 年: 2023 タイトル: Molecular basis for C-degron recognition by CRL2 ubiquitin ligase. 著者: Shidong Zhao / Diana Olmayev-Yaakobov / Wenwen Ru / Shanshan Li / Xinyan Chen / Jiahai Zhang / Xuebiao Yao / Itay Koren / Kaiming Zhang / Chao Xu / 要旨: E3 ubiquitin ligases determine the specificity of eukaryotic protein degradation by selective binding to destabilizing protein motifs, termed degrons, in substrates for ubiquitin-mediated proteolysis. ...E3 ubiquitin ligases determine the specificity of eukaryotic protein degradation by selective binding to destabilizing protein motifs, termed degrons, in substrates for ubiquitin-mediated proteolysis. The exposed C-terminal residues of proteins can act as C-degrons that are recognized by distinct substrate receptors (SRs) as part of dedicated cullin-RING E3 ubiquitin ligase (CRL) complexes. APPBP2, an SR of Cullin 2-RING ligase (CRL2), has been shown to recognize R-x-x-G/C-degron; however, the molecular mechanism of recognition remains elusive. By solving several cryogenic electron microscopy structures of active CRL2 bound with different R-x-x-G/C-degrons, we unveiled the molecular mechanisms underlying the assembly of the CRL2 dimer and tetramer, as well as C-degron recognition. The structural study, complemented by binding experiments and cell-based assays, demonstrates that APPBP2 specifically recognizes the R-x-x-G/C-degron via a bipartite mechanism; arginine and glycine, which play critical roles in C-degron recognition, accommodate distinct pockets that are spaced by two residues. In addition, the binding pocket is deep enough to enable the interaction of APPBP2 with the motif placed at or up to three residues upstream of the C-end. Overall, our study not only provides structural insight into CRL2-mediated protein turnover but also serves as the basis for future structure-based chemical probe design.