- EMDB-2832: Cryo-EM map of a mammalian 60S ribosome-nascent chain-tRNA comple... -
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基本情報
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データベース: EMDB / ID: EMD-2832
タイトル
Cryo-EM map of a mammalian 60S ribosome-nascent chain-tRNA complex with Listerin and NEMF
マップデータ
reconstruction of the rabbit 60S ribosomal subunit housing a defined nascent chain-P-site tRNA in complex with the E3 ligase Listerin and NEMF
試料
試料: rabbit 60S ribosomal subunit housing an in vitro translated nascent chain attached to a P-site tRNA in complex with the E3 ligase Listerin and NEMF.
複合体: 60S ribosomal subunit
RNA: transfer RNA
タンパク質・ペプチド: nascent chain
タンパク質・ペプチド: Listerin
タンパク質・ペプチド: NEMF
キーワード
ribosome-associated quality control / ubiquitin ligase
機能・相同性
機能・相同性情報
alpha-aminoacyl-tRNA binding / CAT tailing / RQC complex / nuclear export / ribosome-associated ubiquitin-dependent protein catabolic process / ribosomal large subunit binding / protein autoubiquitination / cytosolic ribosome / rescue of stalled ribosome / RING-type E3 ubiquitin transferase ...alpha-aminoacyl-tRNA binding / CAT tailing / RQC complex / nuclear export / ribosome-associated ubiquitin-dependent protein catabolic process / ribosomal large subunit binding / protein autoubiquitination / cytosolic ribosome / rescue of stalled ribosome / RING-type E3 ubiquitin transferase / Antigen processing: Ubiquitination & Proteasome degradation / ubiquitin protein ligase activity / protein-containing complex assembly / tRNA binding / zinc ion binding / nucleus / cytosol 類似検索 - 分子機能
: / Listerin HEAT repeat region / 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 ...: / Listerin HEAT repeat region / 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 / : / 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 / Zinc finger RING-type profile. / Zinc finger, RING-type / Armadillo-like helical / Armadillo-type fold / Zinc finger, RING/FYVE/PHD-type 類似検索 - ドメイン・相同性
ジャーナル: Mol Cell / 年: 2015 タイトル: Structure and assembly pathway of the ribosome quality control complex. 著者: Sichen Shao / Alan Brown / Balaji Santhanam / Ramanujan S Hegde / 要旨: During ribosome-associated quality control, stalled ribosomes are split into subunits and the 60S-housed nascent polypeptides are poly-ubiquitinated by Listerin. How this low-abundance ubiquitin ...During ribosome-associated quality control, stalled ribosomes are split into subunits and the 60S-housed nascent polypeptides are poly-ubiquitinated by Listerin. How this low-abundance ubiquitin ligase targets rare stall-generated 60S among numerous empty 60S is unknown. Here, we show that Listerin specificity for nascent chain-60S complexes depends on nuclear export mediator factor (NEMF). The 3.6 Å cryo-EM structure of a nascent chain-containing 60S-Listerin-NEMF complex revealed that NEMF makes multiple simultaneous contacts with 60S and peptidyl-tRNA to sense nascent chain occupancy. Structural and mutational analyses showed that ribosome-bound NEMF recruits and stabilizes Listerin's N-terminal domain, while Listerin's C-terminal RWD domain directly contacts the ribosome to position the adjacent ligase domain near the nascent polypeptide exit tunnel. Thus, highly specific nascent chain targeting by Listerin is imparted by the avidity gained from a multivalent network of context-specific individually weak interactions, highlighting a new principle of client recognition during protein quality control.
全体 : rabbit 60S ribosomal subunit housing an in vitro translated nasce...
全体
名称: rabbit 60S ribosomal subunit housing an in vitro translated nascent chain attached to a P-site tRNA in complex with the E3 ligase Listerin and NEMF.
要素
試料: rabbit 60S ribosomal subunit housing an in vitro translated nascent chain attached to a P-site tRNA in complex with the E3 ligase Listerin and NEMF.
複合体: 60S ribosomal subunit
RNA: transfer RNA
タンパク質・ペプチド: nascent chain
タンパク質・ペプチド: Listerin
タンパク質・ペプチド: NEMF
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超分子 #1000: rabbit 60S ribosomal subunit housing an in vitro translated nasce...
超分子
名称: rabbit 60S ribosomal subunit housing an in vitro translated nascent chain attached to a P-site tRNA in complex with the E3 ligase Listerin and NEMF. タイプ: sample / ID: 1000 / Number unique components: 5