A novel function for eukaryotic elongation factor 3: Inhibition of stop codon readthrough in yeast.
Eukaryotic translation
Stop codon readthrough
eEF3
Journal
Archives of biochemistry and biophysics
ISSN: 1096-0384
Titre abrégé: Arch Biochem Biophys
Pays: United States
ID NLM: 0372430
Informations de publication
Date de publication:
15 05 2023
15 05 2023
Historique:
received:
26
11
2022
revised:
16
03
2023
accepted:
18
03
2023
medline:
1
5
2023
pubmed:
23
3
2023
entrez:
22
3
2023
Statut:
ppublish
Résumé
Eukaryotic elongation factor 3 (eEF3) is one of the essential yeast ribosome-associated ATP-binding cassette type F (ABCF) ATPases. Previously, we found that eEF3 stimulates release of mRNA from puromycin-treated polysomes. In this study, we used a cell-free cricket paralysis virus (CrPV) internal ribosome entry site (IRES)-mediated firefly luciferase bicistronic mRNA translation system with yeast S30 extract. When eEF3 was partially removed from the crude extract, the product from the downstream ORF was increased by the readthrough of a UAA stop codon in the upstream ORF. eEF3 enhanced the release of luciferase from the polysome by eukaryotic release factor (eRF)1 and eRF3. These results suggest that eEF3 is a factor that assists eRFs in performing normal protein synthesis termination in yeast.
Identifiants
pubmed: 36948349
pii: S0003-9861(23)00079-6
doi: 10.1016/j.abb.2023.109580
pii:
doi:
Substances chimiques
Codon, Terminator
0
Peptide Elongation Factors
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
109580Informations de copyright
Copyright © 2023. Published by Elsevier Inc.
Déclaration de conflit d'intérêts
Declaration of competing interest There is no conflict of interest.