| Literature DB >> 2053284 |
A Honigman1, D Wolf, S Yaish, H Falk, A Panet.
Abstract
The pol gene of the Moloney murine leukemia virus (M-MuLV) is expressed as a Gag-Pol fusion protein through an in-frame suppression of the UAG termination codon located between the two genes. The role of nucleotide context in suppression was investigated, in a rabbit reticulocyte lysate translation system, using site-directed mutagenesis. The results indicate that the translational readthrough is mediated by at least 50 bases long RNA sequence located 3' to the gag UAG termination codon. Within this sequence a short purine-rich sequence adjacent to the amber codon, highly conserved among different retroviruses, appears essential for M-MuLV suppression. Two alternative putative stem and loop like RNA structures can be drawn at the gag-pol junction, one abutting the gag UAG codon, and the second downstream to it. None of these structures appears to be important to the suppression process.Entities:
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Year: 1991 PMID: 2053284 PMCID: PMC7131665 DOI: 10.1016/0042-6822(91)90144-z
Source DB: PubMed Journal: Virology ISSN: 0042-6822 Impact factor: 3.616