- EMDB-36129: Structure of CRL2APPBP2 bound with RxxGP degron (dimer) -
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基本情報
登録情報
データベース: EMDB / ID: EMD-36129
タイトル
Structure of CRL2APPBP2 bound with RxxGP degron (dimer)
マップデータ
試料
複合体: CRL2APPBP2 E3 liganse
タンパク質・ペプチド: Amyloid protein-binding protein 2
タンパク質・ペプチド: Cullin-2
タンパク質・ペプチド: Elongin-B
タンパク質・ペプチド: Elongin-C
タンパク質・ペプチド: LEU-THR-ARG-ASN-LYS-GLY-PRO
リガンド: ZINC ION
キーワード
E3 Ubiquitination ligase / PROTEIN BINDING
機能・相同性
機能・相同性情報
ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / target-directed miRNA degradation / VCB complex / elongin complex / microtubule motor activity / microtubule associated complex / Cul5-RING ubiquitin ligase complex / SCF ubiquitin ligase complex / Cul2-RING ubiquitin ligase complex / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process ...ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / target-directed miRNA degradation / VCB complex / elongin complex / microtubule motor activity / microtubule associated complex / Cul5-RING ubiquitin ligase complex / SCF ubiquitin ligase complex / Cul2-RING ubiquitin ligase complex / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process / ubiquitin ligase complex scaffold activity / 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 / Tat-mediated elongation of the HIV-1 transcript / ubiquitin-like ligase-substrate adaptor activity / intracellular transport / Formation of HIV-1 elongation complex containing HIV-1 Tat / Formation of HIV elongation complex in the absence of HIV Tat / RNA Polymerase II Transcription Elongation / Formation of RNA Pol II elongation complex / RNA Polymerase II Pre-transcription Events / intrinsic apoptotic signaling pathway / cytoplasmic vesicle membrane / transcription corepressor binding / intracellular protein transport / TP53 Regulates Transcription of DNA Repair Genes / transcription initiation at RNA polymerase II promoter / transcription elongation by RNA polymerase II / Vif-mediated degradation of APOBEC3G / Inactivation of CSF3 (G-CSF) signaling / Evasion by RSV of host interferon responses / Oxygen-dependent proline hydroxylation of Hypoxia-inducible Factor Alpha / G1/S transition of mitotic cell cycle / Regulation of expression of SLITs and ROBOs / ubiquitin-protein transferase activity / Antigen processing: Ubiquitination & Proteasome degradation / positive regulation of proteasomal ubiquitin-dependent protein catabolic process / Neddylation / protein-containing complex assembly / ubiquitin-dependent protein catabolic process / protein-macromolecule adaptor activity / microtubule / proteasome-mediated ubiquitin-dependent protein catabolic process / protein ubiquitination / ubiquitin protein ligase binding / regulation of transcription by RNA polymerase II / protein-containing complex binding / nucleolus / nucleoplasm / nucleus / cytosol / cytoplasm 類似検索 - 分子機能
Amyloid protein-binding protein 2 / Tetratricopeptide repeat / Tetratricopeptide repeat / Cullin protein neddylation domain / Cullin, conserved site / Elongin-C / Cullin family signature. / Elongin B / Cullin repeat-like-containing domain superfamily / Cullin protein, neddylation domain ...Amyloid protein-binding protein 2 / Tetratricopeptide repeat / Tetratricopeptide repeat / Cullin protein neddylation domain / Cullin, conserved site / Elongin-C / Cullin family signature. / Elongin B / Cullin repeat-like-containing domain superfamily / Cullin protein, neddylation domain / Cullin / Cullin protein neddylation domain / Cullin / Cullin, N-terminal / Cullin homology domain / Cullin homology domain superfamily / Cullin family / Cullin family profile. / S-phase kinase-associated protein 1-like / SKP1 component, POZ domain / Skp1 family, tetramerisation domain / Found in Skp1 protein family / TPR repeat region circular profile. / TPR repeat profile. / Tetratricopeptide repeats / SKP1/BTB/POZ domain superfamily / Tetratricopeptide repeat / Ubiquitin family / Ubiquitin homologues / Tetratricopeptide-like helical domain superfamily / Ubiquitin domain profile. / Ubiquitin-like domain / Ubiquitin-like domain superfamily / Winged helix DNA-binding domain superfamily / Winged helix-like DNA-binding domain superfamily 類似検索 - ドメイン・相同性
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.