Termination of transcription in E. coli.

Bacterial Proteins/physiology Bacteriophage lambda/genetics Base Sequence DNA Helicases/genetics DNA-Directed RNA Polymerases/metabolism Escherichia coli/genetics Gene Expression Regulation Integrases Models, Genetic Nucleic Acid Conformation Operon RNA, Bacterial/metabolism RNA, Messenger/metabolism Repetitive Sequences, Nucleic Acid Rho Factor Transcription Factors/physiology Transcription, Genetic Tryptophan/biosynthesis

Bacterial Proteins RNA, Bacterial RNA, Messenger Rho Factor Transcription Factors Tryptophan Integrases DNA-Directed RNA Polymerases DNA Helicases