title: Rho-dependence of the terminator active at the end of the I region of transcription of bacteriophage f1.
abstract: Infection of rho- Escherichia coli cells with deletion mutant PII of bacteriophage f1 results in a miniphage RNA population composed of transcripts longer than those synthesized in the infection of rho+ cells. This indicates a Rho dependence of the terminator active at the end of the I region of transcription of bacteriophage f1. An estimate of the length of a transcript, which represents a good fraction of the RNA that passes beyond the terminator, indicates that the hairpin structure where synthesis of complementary strand DNA initiates also acts as a fairly efficient Rho-independent terminator.
mesh_terms: D001483:Base Sequence; D002872:Chromosome Deletion; D003090:Coliphages / Q000235:genetics*; D004262:DNA Restriction Enzymes; D004926:Escherichia coli / Q000235:genetics*; D005809:Genes, Regulator; D005814:Genes, Viral; D009154:Mutation; D009690:Nucleic Acid Conformation; D012234:Rho Factor / Q000378:metabolism*; D013728:Terminator Regions, Genetic; D014157:Transcription Factors / Q000378:metabolism*; D014158:Transcription, Genetic
chemical_list: D012234:Rho Factor; D014157:Transcription Factors; D004262:DNA Restriction Enzymes