title: Tn7 transposition: a multigene process. Identification of a regulatory gene product.
abstract: Tn7 transposition is abolished by the deletion of a 2.2kb HindIII fragment from the central region of the transposon. Transposition is restored when the fragment is present in trans. When this fragment is present in trans with wild-type Tn7, transposition frequencies are stimulated 10-100-fold. The DNA sequence of this fragment has been determined and found to contain one long open reading frame coding for a protein of molecular weight 61 187. We have visualised this protein using a DNA-directed prokaryotic transcription-translation system. This gene may fill a regulatory role in the mechanism of Tn7 transposition. When present in trans the 2.2kb HindIII fragment alleviates a transcriptional block of promoter activity detected in Tn7.
mesh_terms: D000595:Amino Acid Sequence; D001426:Bacterial Proteins / Q000235:genetics*; D001483:Base Sequence; D004251:DNA Transposable Elements; D004352:Drug Resistance, Microbial; D005786:Gene Expression Regulation; D005798:Genes, Bacterial; D005809:Genes, Regulator; D011401:Promoter Regions, Genetic; D011995:Recombination, Genetic; D014157:Transcription Factors / Q000235:genetics; D014158:Transcription, Genetic
chemical_list: D001426:Bacterial Proteins; D004251:DNA Transposable Elements; D014157:Transcription Factors