Polarity and transcription in the galactose operon of E. coli.

Bacterial Proteins/biosynthesis Carbon Isotopes Coliphages DNA, Viral Escherichia coli/metabolism Galactose Genetics, Microbial Isoleucine/metabolism Isotope Labeling Mathematics Mutation Nucleic Acid Hybridization Operon RNA, Bacterial/biosynthesis,metabolism RNA, Messenger/biosynthesis,metabolism Time Factors Tritium Uridine/metabolism

Bacterial Proteins Carbon Isotopes DNA, Viral RNA, Bacterial RNA, Messenger Isoleucine Tritium Uridine Galactose