Secretory Expression of Human Growth Hormone in Saccharomyces cerevisiae Using Three Different Leader Sequences

  • Hahm, Moon-Sun (Biomolecular Process Engineering Laboratory, Korea Research Institute of Bioscience and Biotechnology, P.O, Box115, Yuson, Taejon 305-600) ;
  • Chung, Bong-Hyun (Biomolecular Process Engineering Laboratory, Korea Research Institute of Bioscience and Biotechnology, P.O, Box115, Yuson, Taejon 305-600)
  • 발행 : 2001.07.01

초록

A recombinant human growth hormone(hGH) was expressed as a secretory product in the yeast Saccharomyuces cerevisiae. There different leader sequences derived from the mating fac-tor $\alpha$1(MF$\alpha$1) inulinase and invertase were used to direct the secretion of hGH into the extracel-lular medium. Among three leader sequences tested, the inulinase leader sequence was found to be the most efficient in the secretory expression of hGH. In contrast, no hGH was detected in the ex-tracellular medium with the invertase leader sequence. After 48 h shake-flask culture, the yields of hGH secreted into th emedium by the invertase. MF$\alpha$1 inulinase and invertase leader sequences were approximately 0, 0.3 and 0.9 mg/L, respectively. The secretion efficiencies were also found to be 0, 3.8 and 13% for the invertase , MG$\alpha$1 and inulinase leader sequences, respectively.

키워드

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