Structures of the E. coli translating ribosome with SRP and its receptor and with the translocon

Verfasser / Beitragende:
[Ahmad Jomaa, id_orcid 0000-0002-4786-934X, Daniel Boehringer, Marc Leibundgut, Nenad Ban]
Ort, Verlag, Jahr:
2016
Enthalten in:
Nature Communications, 7, p. 10471
Format:
Artikel (online)
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024 7 0 |a 10.3929/ethz-b-000112526  |2 doi 
024 7 0 |a 10.1038/ncomms10471  |2 doi 
035 |a (ETHRESEARCH)oai:www.research-collecti.ethz.ch:20.500.11850/112526 
245 0 0 |a Structures of the E. coli translating ribosome with SRP and its receptor and with the translocon  |h [Elektronische Daten]  |c [Ahmad Jomaa, id_orcid 0000-0002-4786-934X, Daniel Boehringer, Marc Leibundgut, Nenad Ban] 
246 0 |a Nat Commun 
506 |a Open access  |2 ethresearch 
520 3 |a Co-translational protein targeting to membranes is a universally conserved process. Central steps include cargo recognition by the signal recognition particle and handover to the Sec translocon. Here we present snapshots of key co-translational-targeting complexes solved by cryo-electron microscopy at near-atomic resolution, establishing the molecular contacts between the Escherichia coli translating ribosome, the signal recognition particle and the translocon. Our results reveal the conformational changes that regulate the latching of the signal sequence, the release of the heterodimeric domains of the signal recognition particle and its receptor, and the handover of the signal sequence to the translocon. We also observe that the signal recognition particle and the translocon insert-specific structural elements into the ribosomal tunnel to remodel it, possibly to sense nascent chains. Our work provides structural evidence for a conformational state of the signal recognition particle and its receptor primed for translocon binding to the ribosome-nascent chain complex. 
540 |a Creative Commons Attribution 4.0 International  |u http://creativecommons.org/licenses/by/4.0  |2 ethresearch 
700 1 |a Jomaa  |D Ahmad  |e joint author 
700 0 |a id_orcid 0000-0002-4786-934X  |e joint author 
700 1 |a Boehringer  |D Daniel  |e joint author 
700 1 |a Leibundgut  |D Marc  |e joint author 
700 1 |a Ban  |D Nenad  |e joint author 
773 0 |t Nature Communications  |d London : Nature Publ. Group  |g 7, p. 10471  |x 2041-1723 
856 4 0 |u http://hdl.handle.net/20.500.11850/112526  |q text/html  |z WWW-Backlink auf das Repository (Open access) 
908 |D 1  |a Journal Article  |2 ethresearch 
950 |B ETHRESEARCH  |P 856  |E 40  |u http://hdl.handle.net/20.500.11850/112526  |q text/html  |z WWW-Backlink auf das Repository (Open access) 
950 |B ETHRESEARCH  |P 700  |E 1-  |a Jomaa  |D Ahmad  |e joint author 
950 |B ETHRESEARCH  |P 700  |E --  |a id_orcid 0000-0002-4786-934X  |e joint author 
950 |B ETHRESEARCH  |P 700  |E 1-  |a Boehringer  |D Daniel  |e joint author 
950 |B ETHRESEARCH  |P 700  |E 1-  |a Leibundgut  |D Marc  |e joint author 
950 |B ETHRESEARCH  |P 700  |E 1-  |a Ban  |D Nenad  |e joint author 
950 |B ETHRESEARCH  |P 773  |E 0-  |t Nature Communications  |d London : Nature Publ. Group  |g 7, p. 10471  |x 2041-1723 
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949 |B ETHRESEARCH  |F ETHRESEARCH  |b ETHRESEARCH  |j Journal Article  |c Open access