title: Insertion element IS5 contains a third gene.
abstract: We have previously shown that IS5 contains two genes encoded on opposite DNA strands within the same stretch of DNA. Here we present evidence that a third gene and its promoter are present on IS5. The newly discovered gene, ins5C , is contained within the longest gene of IS5, ins5A , but encoded by the complementary DNA strand. The three genes comprise a total of 519 codons present on the 1195-bp element. The arrangement of these genes represents a coding structure of unprecedented compactness.
mesh_terms: D003062:Codon; D004262:DNA Restriction Enzymes; D004251:DNA Transposable Elements; D004269:DNA, Bacterial / Q000235:genetics*; D004926:Escherichia coli / Q000235:genetics*; D009876:Operon; D010957:Plasmids; D014176:Protein Biosynthesis; D012486:Salmonella typhimurium / Q000235:genetics*; D014158:Transcription, Genetic; D014169:Transformation, Bacterial
chemical_list: D003062:Codon; D004251:DNA Transposable Elements; D004269:DNA, Bacterial; D004262:DNA Restriction Enzymes