| Literature DB >> 290990 |
Abstract
Tobacco mosaic virus and turnip yellow mosaic virus genome RNAs, which have long (greater than or equal to 69 nucleotides) 5'-terminal leader sequences preceding the AUG initiation codon, can form disome initiation complexes when incubated with a wheat germ extract and sparsomycin. In tobacco mosaic virus RNA, whereas one ribosome in such complexes presumably occupies the AUG-containing initiation site, the other is located within the RNA leader sequence. The results favor a model of eukaryotic initiation in which ribosomes first bind to the 5' end of the mRNA independently of AUG, then advance to the AUG initiation codon, where protein synthesis ensues.Entities:
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Year: 1979 PMID: 290990 PMCID: PMC383773 DOI: 10.1073/pnas.76.7.3111
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205