- EMDB-15485: Structure of the human DDB1-DCAF12 complex -
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基本情報
登録情報
データベース: EMDB / ID: EMD-15485
タイトル
Structure of the human DDB1-DCAF12 complex
マップデータ
Locally sharpened map (LocScale).
試料
複合体: Complex of DDB1-DCAF12
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
キーワード
ubiquitin / E3 / TRiC / chaperonin / LIGASE
機能・相同性
機能・相同性情報
positive regulation by virus of viral protein levels in host cell / ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / spindle assembly involved in female meiosis / epigenetic programming in the zygotic pronuclei / UV-damage excision repair / 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 ...positive regulation by virus of viral protein levels in host cell / ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / spindle assembly involved in female meiosis / epigenetic programming in the zygotic pronuclei / UV-damage excision repair / 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 / ubiquitin ligase complex scaffold activity / negative regulation of reproductive process / negative regulation of developmental process / cullin family protein binding / viral release from host cell / ectopic germ cell programmed cell death / positive regulation of viral genome replication / ubiquitin-like ligase-substrate adaptor activity / proteasomal protein catabolic process / positive regulation of gluconeogenesis / T cell activation / Recognition of DNA damage by PCNA-containing replication complex / DNA Damage Recognition in GG-NER / nucleotide-excision repair / Dual Incision in GG-NER / Transcription-Coupled Nucleotide Excision Repair (TC-NER) / Formation of TC-NER Pre-Incision Complex / Formation of Incision Complex in GG-NER / regulation of circadian rhythm / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / Wnt signaling pathway / positive regulation of protein catabolic process / cellular response to UV / rhythmic process / site of double-strand break / Neddylation / ubiquitin-dependent protein catabolic process / protein-macromolecule adaptor activity / damaged DNA binding / proteasome-mediated ubiquitin-dependent protein catabolic process / chromosome, telomeric region / protein ubiquitination / regulation of autophagy / DNA repair / apoptotic process / centrosome / DNA damage response / negative regulation of apoptotic process / protein-containing complex binding / nucleolus / protein-containing complex / extracellular space / DNA binding / extracellular exosome / nucleoplasm / nucleus / cytosol / cytoplasm 類似検索 - 分子機能
: / : / DDB1- and CUL4-associated factor 12 beta propeller / RSE1/DDB1/CPSF1 second beta-propeller / Cleavage/polyadenylation specificity factor, A subunit, C-terminal / Cleavage/polyadenylation specificity factor, A subunit, N-terminal / : / CPSF A subunit region / RSE1/DDB1/CPSF1 first beta-propeller / WD40 repeat, conserved site ...: / : / DDB1- and CUL4-associated factor 12 beta propeller / RSE1/DDB1/CPSF1 second beta-propeller / Cleavage/polyadenylation specificity factor, A subunit, C-terminal / Cleavage/polyadenylation specificity factor, A subunit, N-terminal / : / CPSF A subunit region / RSE1/DDB1/CPSF1 first beta-propeller / WD40 repeat, conserved site / Trp-Asp (WD) repeats signature. / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily 類似検索 - ドメイン・相同性
DNA damage-binding protein 1 / DDB1- and CUL4-associated factor 12 類似検索 - 構成要素
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.