title: RNA polymerases from Pseudomonas aeruginosa and Pseudomonas syringae respond to Escherichia coli activator proteins.
abstract: The activities of RNA polymerases (RNAPs) from Pseudomonas aeruginosa and Pseudomonas syringae were compared with that of Escherichia coli RNAP. All three enzymes are able to initiate transcription at the trpBA promoter of P. aeruginosa and at the coliphage lambda promoters, pRM and pRE, in response to heterospecific activators (TrpI protein, repressor, and cII protein, respectively). However, both Pseudomonas polymerases have less stringent requirements for promoter recognition in the absence of activators than does E. coli RNAP.
authors.affiliation: Department of Biology, University of Iowa, Iowa City 52242.
authors.forename: J G
authors.initials: JG
authors.lastname: Gao
authors.forename: G N
authors.initials: GN
authors.lastname: Gussin
mesh_terms: D001426:Bacterial Proteins / Q000378:metabolism*; D001483:Base Sequence; D012321:DNA-Directed RNA Polymerases / Q000302:isolation & purification / Q000378:metabolism*; D004926:Escherichia coli / Q000378:metabolism*; D046911:Macromolecular Substances; D008969:Molecular Sequence Data; D008970:Molecular Weight; D011401:Promoter Regions, Genetic; D011549:Pseudomonas / Q000201:enzymology* / Q000235:genetics; D011550:Pseudomonas aeruginosa / Q000201:enzymology* / Q000235:genetics; D014157:Transcription Factors / Q000378:metabolism*; D014158:Transcription, Genetic
chemical_list: D001426:Bacterial Proteins; D046911:Macromolecular Substances; D014157:Transcription Factors; D012321:DNA-Directed RNA Polymerases