title: DNA microarray analysis of Bacillus subtilis sigma factors of extracytoplasmic function family.
abstract: Target gene candidates of the seven extracytoplasmic function (ECF) sigma factors of Bacillus subtilis have been surveyed using DNA microarray analysis of mRNA extracted from cells grown in Luria-Bertani broth, in which an ECF sigma factor gene was placed under the control of the spac promoter on multicopy plasmid pDG148 and overexpressed. The number of target candidates for each of the sigma factors varied greatly, and a total of 278 genes were selected. Interestingly, the above target gene candidates shared only one gene out of 94 target genes of the general stress sigma B that have been reported in the literature thus far. Furthermore, lacZ-fusion experiments based on the results of DNA microarray analysis indicated that each ECF sigma factor directs transcription of its own operon, with the exception of sigZ. The DNA microarray data collected in this study are available at the KEGG Expression Database web site (http://www.genome.ad.jp/kegg/expression/).
authors.affiliation: Department of Biochemistry and Molecular Biology, Faculty of Science, Saitama University, Saitama, 338-8570 Saitama, Japan.
authors.forename: Kei
authors.initials: K
authors.lastname: Asai
authors.forename: Hirotake
authors.initials: H
authors.lastname: Yamaguchi
authors.forename: Choong-Min
authors.initials: CM
authors.lastname: Kang
authors.forename: Ken-ichi
authors.initials: K
authors.lastname: Yoshida
authors.forename: Yasutaro
authors.initials: Y
authors.lastname: Fujita
authors.forename: Yoshito
authors.initials: Y
authors.lastname: Sadaie
mesh_terms: D001412:Bacillus subtilis / Q000737:chemistry / Q000235:genetics*; D001426:Bacterial Proteins / Q000235:genetics*; D015964:Gene Expression Regulation, Bacterial; D005798:Genes, Bacterial; D005810:Multigene Family; D020411:Oligonucleotide Array Sequence Analysis; D011401:Promoter Regions, Genetic; D012329:RNA, Bacterial / Q000235:genetics; D012333:RNA, Messenger / Q000235:genetics; D011993:Recombinant Fusion Proteins / Q000235:genetics; D012808:Sigma Factor / Q000235:genetics*; D014158:Transcription, Genetic
chemical_list: D001426:Bacterial Proteins; D012329:RNA, Bacterial; D012333:RNA, Messenger; D011993:Recombinant Fusion Proteins; D012808:Sigma Factor