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- Title
The major 5' determinant in stop codon read-through involves two adjacent adenines.
- Authors
Tork, Sanaa; Hatin, Isabelle; Rousset, Jean-Pierre; Fabret, Céline
- Abstract
The aim of this approach was to identify the major determinants, located at the 5' end of the stop codon, that modulate translational read-through in Saccharomyces cerevisiae. We developed a library of oligonucleotides degenerate at the six positions immediately upstream of the termination codon, cloned in the ADE2 reporter gene. Variations at these positions modulated translational read-through efficiency approximately 16-fold. The major effect was imposed by the two nucleotides immediately upstream of the stop codon. We showed that this effect was neither mediated by the last amino acid residues present in the polypeptide chain nor by the tRNA present in the ribosomal P site. We propose that the mRNA structure, depending on the nucleotides in the P site, is the main 5' determinant of read-through efficiency.
- Publication
Nucleic acids research, 2004, Vol 32, Issue 2, p415
- ISSN
1362-4962
- Publication type
Journal Article
- DOI
10.1093/nar/gkh201