- EMDB-70444: Consensus reconstruction of the eukaryotic Ribosome-associated Qu... -
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Basic information
Entry
Database: EMDB / ID: EMD-70444
Title
Consensus reconstruction of the eukaryotic Ribosome-associated Quality Control complex
Map data
Sample
Complex: Ribosome-associated Quality Control complex from budding yeast
Protein or peptide: x 52 types
RNA: x 4 types
Ligand: x 5 types
Keywords
ubiquitin / structural protein
Function / homology
Function and homology information
alpha-aminoacyl-tRNA binding / Josephin domain DUBs / RAS processing / Regulation of PTEN localization / ER Quality Control Compartment (ERQC) / UCH proteinases / PINK1-PRKN Mediated Mitophagy / CAT tailing / Interleukin-1 signaling / Aggrephagy ...alpha-aminoacyl-tRNA binding / Josephin domain DUBs / RAS processing / Regulation of PTEN localization / ER Quality Control Compartment (ERQC) / UCH proteinases / PINK1-PRKN Mediated Mitophagy / CAT tailing / Interleukin-1 signaling / Aggrephagy / Pexophagy / Regulation of pyruvate metabolism / SCF complex disassembly in response to cadmium stress / mitotic DNA replication termination / Ovarian tumor domain proteases / Cdc48p-Npl4p-Vms1p AAA ATPase complex / Doa10p ubiquitin ligase complex / stress-induced homeostatically regulated protein degradation pathway / Peroxisomal protein import / endoplasmic reticulum membrane fusion / Synthesis of active ubiquitin: roles of E1 and E2 enzymes / protein localization to vacuole / sister chromatid biorientation / Hrd1p ubiquitin ligase ERAD-L complex / ribophagy / DNA replication termination / RQC complex / Metalloprotease DUBs / Endosomal Sorting Complex Required For Transport (ESCRT) / peptide biosynthetic process / mitochondria-associated ubiquitin-dependent protein catabolic process / cytoplasm protein quality control by the ubiquitin-proteasome system / positive regulation of mitochondrial fusion / HSF1 activation / nuclear protein quality control by the ubiquitin-proteasome system / protein-containing complex disassembly / E3 ubiquitin ligases ubiquitinate target proteins / protein transport to vacuole involved in ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway / endosome to plasma membrane protein transport / Translesion synthesis by REV1 / Translesion synthesis by POLK / Translesion synthesis by POLI / protein phosphatase regulator activity / Translesion Synthesis by POLH / piecemeal microautophagy of the nucleus / mating projection tip / Termination of translesion DNA synthesis / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / Negative regulators of DDX58/IFIH1 signaling / mitotic spindle disassembly / maturation of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / VCP-NPL4-UFD1 AAA ATPase complex / Protein methylation / replisome / vesicle-fusing ATPase / ribosome-associated ubiquitin-dependent protein catabolic process / K48-linked polyubiquitin modification-dependent protein binding / regulation of polysaccharide biosynthetic process / retrograde protein transport, ER to cytosol / nuclear outer membrane-endoplasmic reticulum membrane network / Ubiquitin-Mediated Degradation of Phosphorylated Cdc25A / maturation of 5.8S rRNA / Regulation of PTEN stability and activity / nonfunctional rRNA decay / transporter complex / CDK-mediated phosphorylation and removal of Cdc6 / cleavage in ITS2 between 5.8S rRNA and LSU-rRNA of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / response to cycloheximide / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / KEAP1-NFE2L2 pathway / Neddylation / Formation of TC-NER Pre-Incision Complex / Orc1 removal from chromatin / MAPK6/MAPK4 signaling / lipopolysaccharide transport / SRP-dependent cotranslational protein targeting to membrane / GTP hydrolysis and joining of the 60S ribosomal subunit / ribosomal large subunit binding / Gap-filling DNA repair synthesis and ligation in TC-NER / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / protein quality control for misfolded or incompletely synthesized proteins / Formation of a pool of free 40S subunits / preribosome, large subunit precursor / Antigen processing: Ubiquitination & Proteasome degradation / L13a-mediated translational silencing of Ceruloplasmin expression / Gram-negative-bacterium-type cell outer membrane assembly / Dual incision in TC-NER / translational elongation / polyubiquitin modification-dependent protein binding / ribosomal large subunit export from nucleus / autophagosome maturation / mRNA transport / 90S preribosome / Ub-specific processing proteases / ribosomal subunit export from nucleus / subtelomeric heterochromatin formation / regulation of translational fidelity / protein-RNA complex assembly / proteasomal protein catabolic process Similarity search - Function
TCF25/Rqc1 / Transcriptional repressor TCF25 / NFACT protein, C-terminal / NFACT protein C-terminal domain / E3 ubiquitin-protein ligase listerin / Listerin, zinc finger, RING-type / : / : / : / E3 ubiquitin-protein ligase listerin, N-terminal domain ...TCF25/Rqc1 / Transcriptional repressor TCF25 / NFACT protein, C-terminal / NFACT protein C-terminal domain / E3 ubiquitin-protein ligase listerin / Listerin, zinc finger, RING-type / : / : / : / E3 ubiquitin-protein ligase listerin, N-terminal domain / LTN1 family HEAT repeat region / Ubiquitin conjugating domain-like / NPL4, zinc-binding putative / NPL4 family, putative zinc binding region / Nuclear pore localisation protein NPL4, C-terminal / Nuclear protein localization protein 4 / NPL4 family / FANCL C-terminal domain / : / Zinc finger, RING-CH-type / The RING-variant domain is a C4HC3 zinc-finger like motif found in a number of cellular and viral proteins. Some of these proteins have been shown both in vivo and in vitro to have ubiquitin E3 ligase activity. / NFACT, RNA-binding domain / NFACT protein RNA binding domain / NFACT N-terminal and middle domains / Ring finger domain / AAA ATPase, CDC48 family / Translation initiation factor IF6 / eIF-6 family / translation initiation factor 6 / 60s Acidic ribosomal protein / 60S acidic ribosomal protein P0 / Cell division protein 48 (CDC48), N-terminal domain / CDC48, N-terminal subdomain / Cell division protein 48 (CDC48) N-terminal domain / CDC48, domain 2 / Cell division protein 48 (CDC48), domain 2 / Cell division protein 48 (CDC48) domain 2 / : / CDC48 domain 2-like superfamily / : / LptD, C-terminal / LPS-assembly protein LptD / : / LPS transport system D / Organic solvent tolerance-like, N-terminal / LptA/(LptD N-terminal domain) LPS transport protein / Group II dsDNA virus coat/capsid protein / 50S ribosomal protein L10, insertion domain superfamily / : / Aspartate decarboxylase-like domain superfamily / 60S ribosomal protein L10P, insertion domain / Insertion domain in 60S ribosomal protein L10P / Ribosomal protein L41 / Ribosomal protein L41 / Ribosomal protein L1, conserved site / Ribosomal protein L1 signature. / Ribosomal protein L1 / Ribosomal protein L29e / Ribosomal L29e protein family / Ribosomal protein L22e / Ribosomal protein L22e superfamily / Ribosomal L22e protein family / Ribosomal protein L27e, conserved site / Ribosomal protein L27e signature. / Ribosomal protein L10e, conserved site / Ribosomal protein L10e signature. / Ribosomal protein L38e / Ribosomal protein L38e superfamily / Ribosomal L38e protein family / Ribosomal protein L10e / Ribosomal protein L1, 3-layer alpha/beta-sandwich / Ribosomal protein L44e signature. / Ribosomal protein L24e, conserved site / Ribosomal protein L24e signature. / Ribosomal protein L19/L19e conserved site / Ribosomal protein L19, eukaryotic / Ribosomal protein L19e signature. / : / 60S ribosomal protein L18a/ L20, eukaryotes / Ribosomal protein L6e signature. / : / Ribosomal protein L44e / Ribosomal protein L44 / Ribosomal protein L34e, conserved site / Ribosomal protein L34e signature. / Ribosomal protein L5 eukaryotic, C-terminal / 50S ribosomal protein L18Ae/60S ribosomal protein L20 and L18a / Ribosomal L18 C-terminal region / Ribosomal L40e family / Ribosomal protein 50S-L18Ae/60S-L20/60S-L18A / Ribosomal proteins 50S-L18Ae/60S-L20/60S-L18A / Ribosomal protein 60S L18 and 50S L18e / Ribosomal_L40e / Ribosomal protein L40e / Ribosomal protein L40e superfamily / Ribosomal protein L18/L18-A/B/e, conserved site / AAA ATPase, AAA+ lid domain / AAA+ lid domain / Ribosomal protein L18e signature. / Ribosomal protein L23/L25, N-terminal Similarity search - Domain/homology
Large ribosomal subunit protein uL15 / Large ribosomal subunit protein eL24A / Large ribosomal subunit protein uL23 / Large ribosomal subunit protein eL39 / Large ribosomal subunit protein uL10 / Large ribosomal subunit protein uL30A / Large ribosomal subunit protein uL6A / Large ribosomal subunit protein eL6B / Large ribosomal subunit protein uL22A / Large ribosomal subunit protein uL24A ...Large ribosomal subunit protein uL15 / Large ribosomal subunit protein eL24A / Large ribosomal subunit protein uL23 / Large ribosomal subunit protein eL39 / Large ribosomal subunit protein uL10 / Large ribosomal subunit protein uL30A / Large ribosomal subunit protein uL6A / Large ribosomal subunit protein eL6B / Large ribosomal subunit protein uL22A / Large ribosomal subunit protein uL24A / Large ribosomal subunit protein eL33A / Large ribosomal subunit protein eL36A / Large ribosomal subunit protein eL29 / Large ribosomal subunit protein eL22A / Large ribosomal subunit protein uL5A / Large ribosomal subunit protein eL27A / Large ribosomal subunit protein eL31A / Polyubiquitin / Polyubiquitin-C / Ubiquitin-ribosomal protein eL40A fusion protein / Large ribosomal subunit protein eL20A / Large ribosomal subunit protein eL43A / Large ribosomal subunit protein eL42A / Large ribosomal subunit protein uL14A / Large ribosomal subunit protein uL1A / Large ribosomal subunit protein uL2A / Large ribosomal subunit protein eL18A / Large ribosomal subunit protein uL11A / Large ribosomal subunit protein eL19A / Large ribosomal subunit protein uL29A / Small ribosomal subunit protein eS32A / Large ribosomal subunit protein uL4A / Putative major capsid protein p72 / Large ribosomal subunit protein uL3 / Large ribosomal subunit protein eL8A / Cell division control protein 48 / Large ribosomal subunit protein uL18 / Large ribosomal subunit protein uL13A / Nuclear protein localization protein 4 / Large ribosomal subunit protein eL14A / Large ribosomal subunit protein eL32 / Large ribosomal subunit protein uL16 / Large ribosomal subunit protein eL37A / Large ribosomal subunit protein eL38 / Large ribosomal subunit protein eL34A / Large ribosomal subunit protein eL21A / E3 ubiquitin-protein ligase listerin / Ribosome quality control complex subunit 1 / Eukaryotic translation initiation factor 6 / Ribosome quality control complex subunit 2 / LPS-assembly protein LptD Similarity search - Component
Biological species
Saccharomyces cerevisiae (brewer's yeast)
Method
single particle reconstruction / cryo EM / Resolution: 3.16 Å
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R35 GM133772
United States
Citation
Journal: Nat Commun / Year: 2025 Title: Mechanism of nascent chain removal by the ribosome-associated quality control complex. Authors: Wenyan Li / Talia Scheel / Peter S Shen / Abstract: Errors during translation can cause ribosome stalling, leaving incomplete nascent chains attached to large ribosomal subunits. Cells rely on the Ribosome-associated Quality Control (RQC) complex to ...Errors during translation can cause ribosome stalling, leaving incomplete nascent chains attached to large ribosomal subunits. Cells rely on the Ribosome-associated Quality Control (RQC) complex to recognize, process, and remove these aberrant proteins to maintain proteostasis. Despite its importance, the mechanisms by which the RQC orchestrates nascent chain processing and extraction have remained unclear. Here, we present a cryo-EM structure of the RQC complex from budding yeast, revealing how its core components function in nascent chain removal. We show that the Cdc48 ATPase and its Ufd1-Npl4 adaptor are recruited by the Ltn1 E3 ubiquitin ligase to extract ubiquitylated peptides from the 60S ribosome. Additionally, we find that Rqc1 bridges the 60S subunit with ubiquitin and Ltn1, facilitating formation of K48-linked polyubiquitin chains. These findings provide a structural and mechanistic framework for understanding how the RQC complex collaborates to clear stalled translation products, advancing insight into cellular protein quality control.
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