Author:
Hayashi M N,Hayashi M,Müller U R
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.
Publisher
American Society for Microbiology
Subject
Virology,Insect Science,Immunology,Microbiology
Reference19 articles.
1. Transcription of bacteriophage 4X174 in iitro: selective initiation with oligonucleotides;Axelrod N.;J. Mol. Biol.,1976
2. A rapid alkaline extraction procedure for screening recombinant plasmid DNA;Birnboim H. C.;Nucleic Acids Res.,1979
3. Process of infection with bacteriophage 4X174. XXXVII. RNA metabolism in 4X174-infected cells;Clements J. B.;J. Virol.,1975
4. Nucleotide sequence of the J gene and surrounding untranslated regions of phage G4 DNA: comparison with phage XX174;Fiddes J. C.;Cell,1978
5. Fujimura F. K. and M. Hayashi. 1978. Transcription of isometric single-stranded DNA phage p. 485-505. In D. T. Denhardt D. Dressler and D. S. Ray (ed.) The single-stranded DNA phages. Cold Spring Harbor Laboratory Cold Spring Harbor N.Y.
Cited by
20 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献