{"title":"Sigma factors for cyanobacterial transcription.","authors":"Sousuke Imamura, Munehiko Asayama","doi":"10.4137/grsb.s2090","DOIUrl":null,"url":null,"abstract":"<p><p>Cyanobacteria are photosynthesizing microorganisms that can be used as a model for analyzing gene expression. The expression of genes involves transcription and translation. Transcription is performed by the RNA polymerase (RNAP) holoenzyme, comprising a core enzyme and a sigma (sigma) factor which confers promoter selectivity. The unique structure, expression, and function of cyanobacterial sigma factors (and RNAP core subunits) are summarized here based on studies, reported previously. The types of promoter recognized by the sigma factors are also discussed with regard to transcriptional regulation.</p>","PeriodicalId":73138,"journal":{"name":"Gene regulation and systems biology","volume":"3 ","pages":"65-87"},"PeriodicalIF":0.0000,"publicationDate":"2009-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4137/grsb.s2090","citationCount":"112","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Gene regulation and systems biology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4137/grsb.s2090","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 112
Abstract
Cyanobacteria are photosynthesizing microorganisms that can be used as a model for analyzing gene expression. The expression of genes involves transcription and translation. Transcription is performed by the RNA polymerase (RNAP) holoenzyme, comprising a core enzyme and a sigma (sigma) factor which confers promoter selectivity. The unique structure, expression, and function of cyanobacterial sigma factors (and RNAP core subunits) are summarized here based on studies, reported previously. The types of promoter recognized by the sigma factors are also discussed with regard to transcriptional regulation.