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Regeneration of ATP through an Activated Glycolytic Pathway in a Cell-free Extract and its Application for Protein Expression  

Kim Dong Myung (Department of Fine Chemical Engineering and Chemistry, Chungnam National University)
Keum Jeong Won (Interdisciplinary Programs for Biochemical Engineering and Biotechnology, Seoul National University)
Kim Tae Wan (Interdisciplinary Programs for Biochemical Engineering and Biotechnology, Seoul National University)
Oh In Seok (Interdisciplinary Programs for Biochemical Engineering and Biotechnology, Seoul National University)
Choi Cha-yong (Interdisciplinary Programs for Biochemical Engineering and Biotechnology, Seoul National University)
Publication Information
KSBB Journal / v.19, no.6, 2004 , pp. 467-470 More about this Journal
Abstract
We have investigated the key parameters affecting ATP regeneration in a cell-free protein synthesis system derived from Escherichia coli. When glucose-6-phosphate was used as an energy source, the efficiency of ATP regeneration sharply responded to pH change of reaction mixture. In addition, both productivity and reproducibility of protein synthesis was substantially enhanced by introducing appropriate amount of NAD into the reaction mixture. As a result, through the activation of glycolytic pathway under an optimal pH, the batch cell-free system produced over $300\;{\mu}g$ of protein in a 1 mL reaction.
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