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. 1983 Oct;48(1):186–196. doi: 10.1128/jvi.48.1.186-196.1983

Role for the J-F intercistronic region of bacteriophages phi X174 and G4 in stability of mRNA.

M N Hayashi, M Hayashi, U R Müller
PMCID: PMC255335  PMID: 6224941

Abstract

A hairpin-like secondary structure in the intercistronic region between genes J and F of bacteriophages, phi X174 and G4 has been postulated to act as a transcription termination signal. We analyzed the in vivo transcripts of both phages and mutants derived from them with modifications of this hairpin structure. The phi X174 mutants appeared to fall into two groups with respect to the stability of two mRNA species. Class 1 mutants showed an mRNA profile very similar to the parental strain, whereas class 2 mutants lacked two major mRNA species normally terminated near the J-F region. The G4 mutants behaved like class 2 mutants of phi X174. Analysis of the stability of phi X174 mRNA revealed that messages specific for the genes upstream of the hairpin turn over more rapidly in class 2 mutants than in class 1 mutants. In class 1 mutants, the mRNA decay rates are similar but not identical to those of the wild-type strain. These data suggest a role for the nucleotide sequence within the J-F intercistronic region in mRNA degradation. They further imply that transcription termination occurs downstream from this site.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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