title: Identification of a promoter for the crystal protein-encoding gene cryIVB from Bacillus thuringiensis subsp. israelensis.
abstract: The cryIVB gene of Bacillus thuringiensis subsp. israelensis (Bti) codes for a 135-kDa insecticidal crystal protein, which is specifically toxic to dipteran larvae. We have identified a transcription start point (tsp) of cryIVB by a primer extension experiment. The promoter sequence alignment, together with the chronology of appearance of the transcript, suggested that cryIVB is transcribed by RNA polymerase containing sigma 35 (E sigma 35). This was confirmed by investigation of cryIVB transcription in several Bacillus subtilis sporulation mutants. Unlike the lepidopteran-specific crystal protein-encoding genes [cryIA(a) and cryIB], transcription of which is regulated by both sigma 35 and sigma 28, cryIVB transcription was controlled only by the sigma 35-dependent promoter at the midsporulation stage.
authors.affiliation: Department of Agricultural Chemistry, Faculty of Agriculture, Kyoto University, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Yoshisue
authors.forename: T
authors.initials: T
authors.lastname: Nishimoto
authors.forename: H
authors.initials: H
authors.lastname: Sakai
authors.forename: T
authors.initials: T
authors.lastname: Komano
mesh_terms: D000595:Amino Acid Sequence; D001413:Bacillus thuringiensis / Q000235:genetics* / Q000502:physiology; D000083722:Bacillus thuringiensis Toxins; D001426:Bacterial Proteins / Q000235:genetics*; D001427:Bacterial Toxins; D001483:Base Sequence; D002874:Chromosome Mapping; D004269:DNA, Bacterial; D004731:Endotoxins / Q000235:genetics*; D015964:Gene Expression Regulation, Bacterial; D005798:Genes, Bacterial; D006460:Hemolysin Proteins; D008969:Molecular Sequence Data; D011401:Promoter Regions, Genetic; D013171:Spores, Bacterial / Q000235:genetics; D014158:Transcription, Genetic
chemical_list: D000083722:Bacillus thuringiensis Toxins; D001426:Bacterial Proteins; D001427:Bacterial Toxins; D004269:DNA, Bacterial; D004731:Endotoxins; D006460:Hemolysin Proteins; C030956:insecticidal crystal protein, Bacillus Thuringiensis