- 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 / CAT tailing / EGAD pathway / 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 / protein localization to vacuole / stress-induced homeostatically regulated protein degradation pathway ...alpha-aminoacyl-tRNA binding / CAT tailing / EGAD pathway / 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 / protein localization to vacuole / stress-induced homeostatically regulated protein degradation pathway / endoplasmic reticulum membrane fusion / sister chromatid biorientation / Hrd1p ubiquitin ligase ERAD-L complex / DNA replication termination / RQC complex / mitochondria-associated ubiquitin-dependent protein catabolic process / protein-containing complex disassembly / peptide biosynthetic process / positive regulation of mitochondrial fusion / cytoplasm protein quality control by the ubiquitin-proteasome system / HSF1 activation / endosome to plasma membrane protein transport / protein transport to vacuole involved in ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway / nuclear protein quality control by the ubiquitin-proteasome system / ribophagy / protein phosphatase regulator activity / piecemeal microautophagy of the nucleus / replisome / mating projection tip / maturation of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Protein methylation / mitotic spindle disassembly / VCP-NPL4-UFD1 AAA ATPase complex / Ribosome Quality Control (RQC) complex extracts and degrades nascent peptide / pre-mRNA 5'-splice site binding / vesicle-fusing ATPase / cytosolic large ribosomal subunit assembly / K48-linked polyubiquitin modification-dependent protein binding / PELO:HBS1L and ABCE1 dissociate a ribosome on a non-stop mRNA / nuclear outer membrane-endoplasmic reticulum membrane network / maturation of 5.8S rRNA / nonfunctional rRNA decay / KEAP1-NFE2L2 pathway / Neddylation / response to cycloheximide / retrograde protein transport, ER to cytosol / ribosome-associated ubiquitin-dependent protein catabolic process / cleavage in ITS2 between 5.8S rRNA and LSU-rRNA of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / SRP-dependent cotranslational protein targeting to membrane / GTP hydrolysis and joining of the 60S ribosomal subunit / ribosomal large subunit binding / Formation of a pool of free 40S subunits / preribosome, large subunit precursor / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / Antigen processing: Ubiquitination & Proteasome degradation / L13a-mediated translational silencing of Ceruloplasmin expression / protein quality control for misfolded or incompletely synthesized proteins / negative regulation of mRNA splicing, via spliceosome / subtelomeric heterochromatin formation / translational elongation / autophagosome maturation / ribosomal large subunit export from nucleus / protein unfolding / mRNA transport / polyubiquitin modification-dependent protein binding / 90S preribosome / ribosomal subunit export from nucleus / ATP metabolic process / translational termination / regulation of translational fidelity / maturation of LSU-rRNA / protein-RNA complex assembly / ERAD pathway / Neutrophil degranulation / translation initiation factor activity / protein catabolic process / rescue of stalled cytosolic ribosome / macroautophagy / cytosolic ribosome assembly / ribosomal large subunit biogenesis / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / assembly of large subunit precursor of preribosome / cytosolic ribosome / ubiquitin binding / proteasomal protein catabolic process / translational initiation / positive regulation of protein localization to nucleus / RING-type E3 ubiquitin transferase / maintenance of translational fidelity / modification-dependent protein catabolic process / cytoplasmic stress granule / protein tag activity / ubiquitin-protein transferase activity / rRNA processing / ubiquitin protein ligase activity / peroxisome / nuclear membrane / chromatin organization / ribosome biogenesis 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 / FANCL C-terminal domain / : / NPL4, zinc-binding putative / NPL4 family, putative zinc binding region / 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. / Nuclear pore localisation protein NPL4, C-terminal / Nuclear protein localization protein 4 / NPL4 family / NFACT, RNA-binding domain / NFACT protein RNA binding domain / NFACT N-terminal and middle domains / Ring finger domain / Translation initiation factor IF6 / eIF-6 family / translation initiation factor 6 / AAA ATPase, CDC48 family / 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 / 50S ribosomal protein L10, insertion domain superfamily / 60S ribosomal protein L10P, insertion domain / Insertion domain in 60S ribosomal protein L10P / : / Aspartate decarboxylase-like domain superfamily / Ribosomal protein L1, conserved site / Ribosomal protein L1 signature. / Ribosomal protein L1 / Ribosomal protein L1, 3-layer alpha/beta-sandwich / Ribosomal protein L41 / Ribosomal protein L41 / Ribosomal protein L13e, conserved site / Ribosomal protein L13e signature. / Ribosomal protein L29e / Ribosomal L29e protein family / Ribosomal protein L1-like / Ribosomal protein L1/ribosomal biogenesis protein / Ribosomal protein L1p/L10e family / Ribosomal protein L27e, conserved site / Ribosomal protein L27e signature. / Ribosomal protein L22e / Ribosomal protein L22e superfamily / Ribosomal L22e protein family / Ribosomal protein L13e / Ribosomal protein L13e / : / Ribosomal protein L38e / Ribosomal protein L38e superfamily / Ribosomal L38e protein family / Ribosomal protein L6e signature. / Ribosomal protein L19, eukaryotic / 60S ribosomal protein L18a/ L20, eukaryotes / Ribosomal protein L10e, conserved site / Ribosomal protein L10e signature. / Ribosomal protein L18/L18-A/B/e, conserved site / Ribosomal protein L18e signature. / Ribosomal protein L44e signature. / Ribosomal protein L24e, conserved site / Ribosomal protein L19/L19e conserved site / Ribosomal protein L19e signature. / Ribosomal protein L24e signature. / Ribosomal protein L5 eukaryotic, C-terminal / Ribosomal L18 C-terminal region / Ribosomal protein L23/L25, N-terminal / Ribosomal protein L23, N-terminal domain / Ribosomal protein L10e / Ribosomal protein L34e, conserved site / Ribosomal protein L34e signature. / Ribosomal L40e family / Ribosomal protein L36e signature. / Ribosomal protein L30e signature 1. / Eukaryotic Ribosomal Protein L27, KOW domain / Ribosomal protein L27e / Ribosomal protein L27e superfamily / Ribosomal L27e protein family / Ribosomal Protein L6, KOW domain / 50S ribosomal protein L18Ae/60S ribosomal protein L20 and L18a / : / Ribosomal protein L35Ae, conserved site / Ribosomal protein L35Ae signature. 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 / Large ribosomal subunit protein eL30 / Large ribosomal subunit protein uL3 / Large ribosomal subunit protein eL8A / AAA family ATPase involved in ubiquitin-mediated protein degradation CDC48 / 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 / Large ribosomal subunit protein eL13A 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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