Isolation and functional characterization of a temperature-sensitive mutant of the yeast Saccharomyces cerevisiae in translation initiation factor eIF5: an eIF5-dependent cell-free translation system.

Abstract excerpt

Eukaryotic translation initiation factor 5 (eIF5) interacts with the 40S ribosomal initiation complex (40S.eIF3.AUG.Met-tRNA(f).eIF2.GTP) to promote the hydrolysis of bound GTP. In Saccharomyces cerevisiae, eIF5, a protein of 45346Da, is encoded by a single-copy essential gene, TIF5. In this paper, we have isolated a temperature-sensitive S. cerevisiae strain, TMY5-1, by replacing the wild-type chromosomal copy...

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