In:
Bioscience, Biotechnology, and Biochemistry, Informa UK Limited, Vol. 82, No. 11 ( 2018-11-02), p. 1942-1954
Abstract:
To achieve rhamnose-inducible efficient protein expression in Bacillus subtilis, we assembled the strong promoters of B. subtilis cdd and ylbP genes and the regulatory region (PrhaEW) of B. subtilis rhaEWRBMA operon, whose transcription is induced by rhamnose and repressed by glucose, to produce various hybrid constructs. These constructs were evaluated using B. subtilis strains carrying a fusion of each construct to the gene encoding a mutated green fluorescent protein in the chromosome. When these strains were cultivated in the presence of glucose or rhamnose, the strain carrying a fusion of a partial PrhaEW region, lacking the intrinsic Shine-Dalgarno (SD) sequence, and the ylbP SD sequence most strictly controlled the promoter activity depending on sugar species. Moreover, the strain carrying a fusion of the cdd core promoter and the ylbP SD sequence showed the highest promoter activity when it was cultivated in the presence of glucose until the late stationary phase. Abbreviations: RNAP: RNA polymerase; cre: catabolite-responsive element; SD: Shine-Dalgarno; PAGE: polyacrylamide gel electrophoresis; GFP: green fluorescent protein; OD600: optical density at 600 nm; LB: Luria-Bertani; a.u.: arbitrary unit; SDS: sodium dodecyl sulfate.
Type of Medium:
Online Resource
ISSN:
0916-8451
,
1347-6947
DOI:
10.1080/09168451.2018.1497945
Language:
English
Publisher:
Informa UK Limited
Publication Date:
2018
detail.hit.zdb_id:
2110940-0
SSG:
12
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