title: The parD- mutant of Escherichia coli also carries a gyrAam mutation. The complete sequence of gyrA.
abstract: The phenotype of a recently-described mutant (OV6), conditionally defective in chromosome partitioning and septal positioning, was originally thought to be due to a new gene (parD) mapping at 88.4 min. We have now shown that, in addition to the parD mutation, OV6 carries a gyrAam mutation and that this mutation is probably responsible for the gross phenotype of the mutant. We have cloned the gyrA gene, identified the GyrA protein, sequenced the gyrA gene and flanking genes, cloned and sequenced the gyrAam mutation, and identified its truncated product. In addition, we have identified the transcriptional start point of the gyrA gene. The E. coli GyrA protein has extensive homologies with Gyrase proteins of other organisms and weak sequence homologies with some eukaryotic cytoskeletal proteins.
authors.affiliation: Department of Biological Sciences, University of Warwick, Coventry, UK.
authors.forename: K
authors.initials: K
authors.lastname: Hussain
authors.forename: E J
authors.initials: EJ
authors.lastname: Elliott
authors.forename: G P
authors.initials: GP
authors.lastname: Salmond
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001412:Bacillus subtilis; D001426:Bacterial Proteins / Q000235:genetics*; D001483:Base Sequence; D002876:Chromosomes, Bacterial / Q000502:physiology; D004926:Escherichia coli / Q000235:genetics*; D005796:Genes; D005798:Genes, Bacterial; D008969:Molecular Sequence Data; D009154:Mutation; D012689:Sequence Homology, Nucleic Acid; D014158:Transcription, Genetic
chemical_list: D001426:Bacterial Proteins