Abstract
The malic enzyme gene ofAscaris suum was cloned into the vector pTRC99a in two forms encoding alternative arnino-termini. The resulting plasmids, pMEAl and pMEA2, were introduced intoEscherichia coli NZN111, a strain that is unable to grow fermentatively because of inactivation of the genes encoding pyruvate dissimilation. Induction of pMEAl, which encodes the native animoterminus, gave better overexpression of malic enzyme, approx 12-fold compared to uninduced cells. Under the appropriate culture conditions, expression of malic enzyme allowed the fermentative dissimilation of glucose by NZN111. The major fermentation product formed in induced cultures was succinic acid.
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Stols, L., Kulkarni, G., Harris, B.G. et al. Expression ofAscaris suum malic enzyme in a mutantEscherichia coli allows production of succinic acid from glucose. Appl Biochem Biotechnol 63, 153–158 (1997). https://doi.org/10.1007/BF02920421
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DOI: https://doi.org/10.1007/BF02920421