PMID:329104

Citation	Besemer, J and Molzberger, C (1977) Transcription of insertion elements IS1 and IS2 in vitro. Mol. Gen. Genet. 153:51-60
Abstract	Insertion elements IS1 and IS2 integrated within the gal operator-promoter region, an IS1 element in gene galT and insertions IS1 and IS2 integrated in the xycIIOP region of phage lambda were transcribed in vitro with E. coli RNA-polymerase. The insertion elements are transcribed exclusively by polymerase molecules started at the gal promoter and the lambdaPR promoter respectively. No promoter exists on IS1 or IS2 which can be recognized by RNA-polymerase in the pure in vitro transcription system used. Both insertions apparently are transcribed with a lower elongation rate than gal operon DNA or lambdaDNA. RNAs transcribed from the termini of IS1 and IS2 respectively were analysed by hybridization experiments. They are different in sequence.
Links	PubMed
Keywords	Base Sequence; DNA, Bacterial; DNA-Directed RNA Polymerases/metabolism; Escherichia coli/analysis; Genes, Regulator; Nucleic Acid Hybridization; Operon; Peptide Chain Elongation, Translational; Peptide Chain Initiation, Translational; RNA, Bacterial; Transcription, Genetic
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