Consensus refinement of state G filtered according to local resolution.
試料
複合体: Yeast RQC complex in state G
タンパク質・ペプチド: x 49種
RNA: x 4種
リガンド: x 3種
機能・相同性
機能・相同性情報
alpha-aminoacyl-tRNA binding / positive regulation of cytoplasmic translational elongation through polyproline stretches / Hypusine synthesis from eIF5A-lysine / CAT tailing / translational frameshifting / RQC complex / positive regulation of translational termination / peptide biosynthetic process / positive regulation of translational elongation / ribosome-associated ubiquitin-dependent protein catabolic process ...alpha-aminoacyl-tRNA binding / positive regulation of cytoplasmic translational elongation through polyproline stretches / Hypusine synthesis from eIF5A-lysine / CAT tailing / translational frameshifting / RQC complex / positive regulation of translational termination / peptide biosynthetic process / positive regulation of translational elongation / ribosome-associated ubiquitin-dependent protein catabolic process / maturation of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / pre-mRNA 5'-splice site binding / cleavage in ITS2 between 5.8S rRNA and LSU-rRNA of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / response to cycloheximide / maturation of 5.8S 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 / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / negative regulation of mRNA splicing, via spliceosome / Antigen processing: Ubiquitination & Proteasome degradation / L13a-mediated translational silencing of Ceruloplasmin expression / preribosome, large subunit precursor / translational elongation / ribosomal large subunit export from nucleus / subtelomeric heterochromatin formation / 90S preribosome / protein-RNA complex assembly / regulation of translational fidelity / proteasomal protein catabolic process / positive regulation of translational initiation / translation elongation factor activity / ribosomal subunit export from nucleus / cytosolic ribosome / translation initiation factor activity / maturation of LSU-rRNA / rescue of stalled ribosome / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / assembly of large subunit precursor of preribosome / cytosolic ribosome assembly / ribosomal large subunit biogenesis / translational initiation / macroautophagy / maintenance of translational fidelity / RING-type E3 ubiquitin transferase / protein catabolic process / modification-dependent protein catabolic process / cytoplasmic stress granule / rRNA processing / protein tag activity / ubiquitin-protein transferase activity / ubiquitin protein ligase activity / ribosome biogenesis / chromatin organization / ribosome binding / chromosome, telomeric region / 5S rRNA binding / large ribosomal subunit rRNA binding / ubiquitin-dependent protein catabolic process / cytosolic large ribosomal subunit / cytoplasmic translation / tRNA binding / rRNA binding / negative regulation of translation / ribosome / protein ubiquitination / structural constituent of ribosome / translation / response to antibiotic / mRNA binding / ubiquitin protein ligase binding / nucleolus / perinuclear region of cytoplasm / mitochondrion / RNA binding / zinc ion binding / nucleus / metal ion binding / cytoplasm / cytosol 類似検索 - 分子機能
NFACT protein, C-terminal / NFACT protein C-terminal domain / E3 ubiquitin-protein ligase listerin / Listerin, zinc finger, RING-type / : / 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 protein, C-terminal / NFACT protein C-terminal domain / E3 ubiquitin-protein ligase listerin / Listerin, zinc finger, RING-type / : / 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 / : / Translation initiation factor 5A-like, N-terminal / Translation elongation factor, IF5A, hypusine site / Eukaryotic initiation factor 5A hypusine signature. / Eukaryotic elongation factor 5A hypusine, DNA-binding OB fold / Translation elongation factor IF5A-like / Translation elongation factor, IF5A C-terminal / Eukaryotic elongation factor 5A hypusine, DNA-binding OB fold / Ring finger domain / 60s Acidic ribosomal protein / 60S acidic ribosomal protein P0 / Translation initiation factor IF6 / eIF-6 family / translation initiation factor 6 / : / : / 50S ribosomal protein L10, insertion domain superfamily / 60S ribosomal protein L10P, insertion domain / Insertion domain in 60S ribosomal protein L10P / Ribosomal protein L41 / Ribosomal protein L41 / Ribosomal protein L29e / Ribosomal L29e protein family / Ribosomal protein L1, conserved site / Ribosomal protein L13e, conserved site / Ribosomal protein L13e signature. / Ribosomal protein L1 signature. / Ribosomal protein L1 / Ribosomal protein L22e / Ribosomal protein L22e superfamily / Ribosomal L22e protein family / Ribosomal protein L38e / Ribosomal protein L38e superfamily / Ribosomal L38e protein family / : / Ribosomal protein L27e, conserved site / Ribosomal protein L27e signature. / Ribosomal protein L44e signature. / Ribosomal protein L10e, conserved site / Ribosomal protein L10e signature. / Ribosomal protein L10e / Ribosomal protein L13e / Ribosomal protein L13e / Ribosomal protein L19, eukaryotic / 60S ribosomal protein L18a/ L20, eukaryotes / : / Ribosomal protein L24e, conserved site / Ribosomal protein L24e signature. / Ribosomal protein L44e / Ribosomal protein L19/L19e conserved site / Ribosomal protein L44 / Ribosomal protein L19e signature. / Ribosomal protein L34e, conserved site / Ribosomal protein L34e signature. / Ribosomal protein L5 eukaryotic, C-terminal / Ribosomal L18 C-terminal region / Ribosomal protein L6e signature. / 50S ribosomal protein L18Ae/60S ribosomal protein L20 and L18a / Ribosomal L40e family / Ribosomal protein L30e signature 1. / Ribosomal protein 50S-L18Ae/60S-L20/60S-L18A / Ribosomal proteins 50S-L18Ae/60S-L20/60S-L18A / Ribosomal_L40e / Ribosomal protein L40e / Ribosomal protein L40e superfamily / Ribosomal protein L1, 3-layer alpha/beta-sandwich / Ribosomal protein L30e signature 2. / Eukaryotic Ribosomal Protein L27, KOW domain / Ribosomal protein L23/L25, N-terminal / Ribosomal protein L30e, conserved site / Ribosomal protein L23, N-terminal domain / Ribosomal protein 60S L18 and 50S L18e / Ribosomal protein L27e / Ribosomal protein L27e superfamily / Ribosomal L27e protein family / Ribosomal protein L36e signature. / Ribosomal protein L39e, conserved site / Ribosomal protein L39e signature. / Ribosomal protein L18/L18-A/B/e, conserved site / Ribosomal protein L18e signature. / Ribosomal protein L34Ae / Ribosomal protein L34e / 60S ribosomal protein L19 / Ribosomal protein L35Ae, conserved site / Ribosomal protein L35Ae signature. / Ribosomal protein L30/YlxQ / 60S ribosomal protein L35 / Ribosomal Protein L6, KOW domain / Ribosomal protein L7A/L8 類似検索 - ドメイン・相同性
RPL10 isoform 1 / 60S ribosomal protein L29 / RPL5 isoform 1 / RPL12A isoform 1 / Large ribosomal subunit protein uL3 / 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 ...RPL10 isoform 1 / 60S ribosomal protein L29 / RPL5 isoform 1 / RPL12A isoform 1 / Large ribosomal subunit protein uL3 / 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 eL15A / Large ribosomal subunit protein eL22A / Large ribosomal subunit protein uL5A / Large ribosomal subunit protein eL27A / Large ribosomal subunit protein eL31A / 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 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 eL8A / Eukaryotic translation initiation factor 5A-1 / Large ribosomal subunit protein uL13A / Large ribosomal subunit protein eL14A / Large ribosomal subunit protein eL32 / 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 / Eukaryotic translation initiation factor 6 / Ribosome quality control complex subunit 2 / Large ribosomal subunit protein eL13A 類似検索 - 構成要素
ジャーナル: Mol Cell / 年: 2023 タイトル: Molecular basis of eIF5A-dependent CAT tailing in eukaryotic ribosome-associated quality control. 著者: Petr Tesina / Shuhei Ebine / Robert Buschauer / Matthias Thoms / Yoshitaka Matsuo / Toshifumi Inada / Roland Beckmann / 要旨: Ribosome-associated quality control (RQC) is a conserved process degrading potentially toxic truncated nascent peptides whose malfunction underlies neurodegeneration and proteostasis decline in aging. ...Ribosome-associated quality control (RQC) is a conserved process degrading potentially toxic truncated nascent peptides whose malfunction underlies neurodegeneration and proteostasis decline in aging. During RQC, dissociation of stalled ribosomes is followed by elongation of the nascent peptide with alanine and threonine residues, driven by Rqc2 independently of mRNA, the small ribosomal subunit and guanosine triphosphate (GTP)-hydrolyzing factors. The resulting CAT tails (carboxy-terminal tails) and ubiquitination by Ltn1 mark nascent peptides for proteasomal degradation. Here we present ten cryogenic electron microscopy (cryo-EM) structures, revealing the mechanistic basis of individual steps of the CAT tailing cycle covering initiation, decoding, peptidyl transfer, and tRNA translocation. We discovered eIF5A as a crucial eukaryotic RQC factor enabling peptidyl transfer. Moreover, we observed dynamic behavior of RQC factors and tRNAs allowing for processivity of the CAT tailing cycle without additional energy input. Together, these results elucidate key differences as well as common principles between CAT tailing and canonical translation.