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서지반출
Construction of Heat-Inducible Expression Vector of Corynebacterium glutamicum and C. ammoniagenes: Fusion of ${lambda}$ Operator with Promoters Isolated from C. ammoniagenes
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  • Construction of Heat-Inducible Expression Vector of Corynebacterium glutamicum and C. ammoniagenes: Fusion of ${lambda}$ Operator with Promoters Isolated from C. ammoniagenes
  • Construction of Heat-Inducible Expression Vector of Corynebacterium glutamicum and C. ammoniagenes: Fusion of ${lambda}$ Operator with Promoters Isolated from C. ammoniagenes
저자명
Park. Jong-Uk,Jo. Jae-Hyung,Kim. Young-Ji,Chung. So-Sun,Lee. Jin-Ho,Lee. Hyune-Hwan
간행물명
Journal of microbiology and biotechnology
권/호정보
2008년|18권 4호|pp.639-647 (9 pages)
발행정보
한국미생물생명공학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

The heat-inducible expression vectors for Corynebacterium glutamicum and C. ammoniagenes were constructed by using the ${lambda}O_L1$ and the cryptic promoters, CJ1 and CJ4 that express genes constitutively in C. ammoniagenes. Although the promoters were isolated from C. ammoniagenes, CJ1 and CJ4 were also active in C. glutamicum. To construct vectors, the $O_L1$ from the ${lambda}P_L$ promoter was isolated and fused to the CJ1 and CJ4 promoters by recombinant PCR. The resulting artificial promoters, CJ1O and CJ4O, which have one ${lambda}O_L1$, and CJ1OX2, which has two successive ${lambda}O_L1$, were fused to the green fluorescent protein (GFP) gene followed by subcloning into pCES208. The expression of GFP in the corynebacteria harboring the vectors was regulated successfully by the temperature-sensitive cI857 repressor. Among them, C. ammoniagenes harboring plasmid pCJ1OX2G containing GFP fused to CJ1OX2 showed more GFP than the other ones and the expression was tightly regulated by the repressor. To construct the generally applicable expression vector using the plasmid pCJ1OX2G, the His-tag, enterokinase (EK) moiety, and the MCS were inserted in front of the GFP gene. Using the vector, the expression of pyrR from C. glutamicum was tried by temperature shift-up. The results indicated that the constructed vectors (pCeHEMG) can be successfully used in the expression and regulation of foreign genes in corynebacteria.