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. 1979 Feb;29(2):597–611. doi: 10.1128/jvi.29.2.597-611.1979

In vitro, the major ribosome binding site on Rous sarcoma virus RNA does not contain the nucleotide sequence coding for the N-terminal amino acids of the gag gene product.

J L Darlix, P F Spahr, P A Bromley, J C Jaton
PMCID: PMC353193  PMID: 219249

Abstract

Ribosomes from the reticulocyte lysate bind strongly and mainly to a region located in the 5' end of the Rous sarcoma virus RNA molecule between residues 9 and 53. This binding involves the participation of initiator tRNA and is sensitive to inhibitors of initiation of protein synthesis such as 7-methyl-GMP and aurintricarboxylic acid. The nucleotide sequence of this ribosome binding site has been determined: it conatains a GUG codon centered at position 26 that is not in phase with any termination codon within the 5' end nucleotide sequence of the RNA that we have analyzed (101 residues). However, the predicted N-terminal amino acid sequence starting from this GUG codon (or even from any AUG or GUG codon in the 5' end of the RNA) does not coincide with that of the in vitro-synthesized product of the 5' end proximal gag gene. Nevertheless, inhibition of ribosome binding to this site is accompanied by an inhibition of the in vitro translation of the gag gene.

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