Nature Communications (May 2018)
Evolutionary instability of CUG-Leu in the genetic code of budding yeasts
Abstract
The genetic code for amino acids is nearly universal, and among eukaryotic nuclear genomes the only known reassignments are of codon CUG in yeasts. Here, the authors identify a third independent CUG transition in budding yeasts that is still ongoing with alternative tRNAs present in the genome.