title: Principal transcription sigma factors of Pseudomonas putida strains mt-2 and G1 are significantly different.
abstract: The rpoD gene coding for the primary transcription sigma factor, sigma70, and its entire operon were cloned from strain mt-2 of the purple soil bacterium Pseudomonas putida. Comparison of the deduced amino acid sequence of Ppmt-2 sigma70 with that of sigma70 from P. putida strain G1 shows that the two proteins differ in their primary structure, molecular weight, and isoelectric point. The significance of this difference is discussed in terms of bacterial taxonomy and transcription regulation.
authors.affiliation: Pediatric Molecular Cardiology Laboratory, Baylor College of Medicine, Houston, TX 77030, USA. pszafran@bcm.tmc.edu
authors.forename: P
authors.initials: P
authors.lastname: Szafranski
authors.forename: C L
authors.initials: CL
authors.lastname: Smith
authors.forename: C R
authors.initials: CR
authors.lastname: Cantor
mesh_terms: D000595:Amino Acid Sequence; D001426:Bacterial Proteins / Q000737:chemistry* / Q000235:genetics; D001483:Base Sequence; D003001:Cloning, Molecular; D004269:DNA, Bacterial; D012321:DNA-Directed RNA Polymerases / Q000737:chemistry* / Q000235:genetics; D005798:Genes, Bacterial; D008969:Molecular Sequence Data; D009876:Operon; D016958:Pseudomonas putida / Q000737:chemistry* / Q000235:genetics; D017422:Sequence Analysis, DNA; D017386:Sequence Homology, Amino Acid; D012808:Sigma Factor / Q000737:chemistry* / Q000235:genetics; D014158:Transcription, Genetic
chemical_list: D001426:Bacterial Proteins; D004269:DNA, Bacterial; D012808:Sigma Factor; C081775:RNA polymerase sigma 70; D012321:DNA-Directed RNA Polymerases