- EMDB-15484: Structure of human DDB1-DCAF12 in complex with the C-terminus of CCT5 -
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基本情報
登録情報
データベース: EMDB / ID: EMD-15484
タイトル
Structure of human DDB1-DCAF12 in complex with the C-terminus of CCT5
マップデータ
Locally sharpened map (LocScale).
試料
複合体: Complex of DDB1-DCAF12-CCT5
タンパク質・ペプチド: DNA damage-binding protein 1
タンパク質・ペプチド: DDB1- and CUL4-associated factor 12
タンパク質・ペプチド: T-complex protein 1 subunit epsilon
キーワード
ubiquitin / E3 / TRiC / chaperonin / LIGASE
機能・相同性
機能・相同性情報
positive regulation of protein localization to Cajal body / positive regulation of telomerase RNA localization to Cajal body / chaperonin-containing T-complex / BBSome-mediated cargo-targeting to cilium / Formation of tubulin folding intermediates by CCT/TriC / binding of sperm to zona pellucida / Folding of actin by CCT/TriC / positive regulation by virus of viral protein levels in host cell / Prefoldin mediated transfer of substrate to CCT/TriC / spindle assembly involved in female meiosis ...positive regulation of protein localization to Cajal body / positive regulation of telomerase RNA localization to Cajal body / chaperonin-containing T-complex / BBSome-mediated cargo-targeting to cilium / Formation of tubulin folding intermediates by CCT/TriC / binding of sperm to zona pellucida / Folding of actin by CCT/TriC / positive regulation by virus of viral protein levels in host cell / Prefoldin mediated transfer of substrate to CCT/TriC / spindle assembly involved in female meiosis / epigenetic programming in the zygotic pronuclei / UV-damage excision repair / ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / biological process involved in interaction with symbiont / regulation of mitotic cell cycle phase transition / WD40-repeat domain binding / Cul4A-RING E3 ubiquitin ligase complex / Cul4-RING E3 ubiquitin ligase complex / Cul4B-RING E3 ubiquitin ligase complex / Association of TriC/CCT with target proteins during biosynthesis / ubiquitin ligase complex scaffold activity / negative regulation of reproductive process / negative regulation of developmental process / viral release from host cell / cullin family protein binding / ectopic germ cell programmed cell death / positive regulation of viral genome replication / 加水分解酵素; 酸無水物に作用; リン含有酸無水物に作用 / beta-tubulin binding / ubiquitin-like ligase-substrate adaptor activity / positive regulation of telomere maintenance via telomerase / proteasomal protein catabolic process / protein folding chaperone / positive regulation of gluconeogenesis / T cell activation / regulation of autophagy / nucleotide-excision repair / mRNA 3'-UTR binding / ATP-dependent protein folding chaperone / sperm end piece / regulation of circadian rhythm / Recognition of DNA damage by PCNA-containing replication complex / DNA Damage Recognition in GG-NER / mRNA 5'-UTR binding / Dual Incision in GG-NER / Transcription-Coupled Nucleotide Excision Repair (TC-NER) / Wnt signaling pathway / response to virus / Formation of TC-NER Pre-Incision Complex / Formation of Incision Complex in GG-NER / Dual incision in TC-NER / positive regulation of protein catabolic process / Gap-filling DNA repair synthesis and ligation in TC-NER / cellular response to UV / : / rhythmic process / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / G-protein beta-subunit binding / site of double-strand break / sperm principal piece / protein folding / Neddylation / cell body / sperm midpiece / ubiquitin-dependent protein catabolic process / damaged DNA binding / microtubule / proteasome-mediated ubiquitin-dependent protein catabolic process / protein-macromolecule adaptor activity / chromosome, telomeric region / protein stabilization / protein ubiquitination / DNA repair / apoptotic process / DNA damage response / centrosome / negative regulation of apoptotic process / protein-containing complex binding / nucleolus / ATP hydrolysis activity / protein-containing complex / : / DNA binding / extracellular exosome / nucleoplasm / ATP binding / nucleus / cytoplasm / cytosol 類似検索 - 分子機能
ジャーナル: EMBO J / 年: 2023 タイトル: Recognition of the CCT5 di-Glu degron by CRL4 is dependent on TRiC assembly. 著者: Carlos Pla-Prats / Simone Cavadini / Georg Kempf / Nicolas H Thomä / 要旨: Assembly Quality Control (AQC) E3 ubiquitin ligases target incomplete or incorrectly assembled protein complexes for degradation. The CUL4-RBX1-DDB1-DCAF12 (CRL4 ) E3 ligase preferentially ...Assembly Quality Control (AQC) E3 ubiquitin ligases target incomplete or incorrectly assembled protein complexes for degradation. The CUL4-RBX1-DDB1-DCAF12 (CRL4 ) E3 ligase preferentially ubiquitinates proteins that carry a C-terminal double glutamate (di-Glu) motif. Reported CRL4 di-Glu-containing substrates include CCT5, a subunit of the TRiC chaperonin. How DCAF12 engages its substrates and the functional relationship between CRL4 and CCT5/TRiC is currently unknown. Here, we present the cryo-EM structure of the DDB1-DCAF12-CCT5 complex at 2.8 Å resolution. DCAF12 serves as a canonical WD40 DCAF substrate receptor and uses a positively charged pocket at the center of the β-propeller to bind the C-terminus of CCT5. DCAF12 specifically reads out the CCT5 di-Glu side chains, and contacts other visible degron amino acids through Van der Waals interactions. The CCT5 C-terminus is inaccessible in an assembled TRiC complex, and functional assays demonstrate that DCAF12 binds and ubiquitinates monomeric CCT5, but not CCT5 assembled into TRiC. Our biochemical and structural results suggest a previously unknown role for the CRL4 E3 ligase in overseeing the assembly of a key cellular complex.