P. Neubauer, C. Wolff, M. Hecker, K. Hofmann, L. Meyer, P. Kruschke, H. Heinrich
{"title":"Introduction of the tac-promoter by lactose under fermentation conditions","authors":"P. Neubauer, C. Wolff, M. Hecker, K. Hofmann, L. Meyer, P. Kruschke, H. Heinrich","doi":"10.1002/ABIO.370110107","DOIUrl":null,"url":null,"abstract":"The use of the expensive IPTG for induction of the tac-promoter is not practicable at the industrial scale because of the large amounts necessary for induction. We developed a system in which IPTG as inducer was replaced by lactose which induces the tac-promoter with the same efficiency. In E. coli CW3011 (pOF1.0) lactose is utilized as inducer and carbon source even in the presence of glucose, presumably as a consequence of the overproduction of lac-permease.","PeriodicalId":7037,"journal":{"name":"Acta Biotechnologica","volume":"39 1","pages":"23-29"},"PeriodicalIF":0.0000,"publicationDate":"1991-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"17","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Biotechnologica","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1002/ABIO.370110107","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 17
Abstract
The use of the expensive IPTG for induction of the tac-promoter is not practicable at the industrial scale because of the large amounts necessary for induction. We developed a system in which IPTG as inducer was replaced by lactose which induces the tac-promoter with the same efficiency. In E. coli CW3011 (pOF1.0) lactose is utilized as inducer and carbon source even in the presence of glucose, presumably as a consequence of the overproduction of lac-permease.