Involvement of an initiation factor and protein phosphorylation in translational control of GCN4 mRNA.
Regulation of the GCN4 gene of Saccharomyces cerevisiae is one of the best-documented instances of gene-specific translational control in an eukaryote. Upstream open reading frames (uORFs) in GCN4 mRNA modulate the flow of scanning ribosomes to the GCN4 start codon according to the availability of amino acids. Recent results suggest that sequences at the termination codons of the uORFs, a general initiation factor, and a protein kinase all make important contributions to the proper functioning of this interesting translational-control element.
Unit on Molecular Genetics of Lower Eukaryotes, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892.
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Hinnebusch
D001483:Base Sequence; D004268:DNA-Binding Proteins; D005656:Fungal Proteins / Q000235:genetics* / Q000378:metabolism; D015966:Gene Expression Regulation, Fungal / Q000235:genetics / Q000502:physiology*; D008969:Molecular Sequence Data; D010448:Peptide Initiation Factors / Q000235:genetics / Q000502:physiology*; D010766:Phosphorylation; D014176:Protein Biosynthesis; D011494:Protein Kinases; D012331:RNA, Fungal / Q000235:genetics*; D012333:RNA, Messenger / Q000235:genetics*; D029701:Saccharomyces cerevisiae Proteins; D014157:Transcription Factors / Q000235:genetics* / Q000378:metabolism
D004268:DNA-Binding Proteins; D005656:Fungal Proteins; D010448:Peptide Initiation Factors; D012331:RNA, Fungal; D012333:RNA, Messenger; D029701:Saccharomyces cerevisiae Proteins; D014157:Transcription Factors; D011494:Protein Kinases