Abstract
To explore the potential of heterologous protein expression in Kluyveromyces cicerisporus, three expression plasmids, pUK1-PIT, pUKD-PIT and pUKD-S-PIT, based on the vector pUK1 or pUKD were constructed and transformed, respectively, into yeast strain K. cicerisporus Y179U. Human interferon α-2a, used as an example protein, was successfully expressed and secreted by transformant Y179U/pUKD-PIT and Y179U/pUKD-S-PIT. In the flask culture, strain Y179U/pUKD-S-PIT could express interferon at 60 mg/l. The stability of plasmid pUKD-S-PIT in the host was higher than that of pUKD-PIT. This was consistent with their expression levels of interferon. There were two interferon-related bands found by Western blotting analysis. The possible reason for this is discussed.
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This project was granted financial support from the China Postdoctoral Science Foundation.
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Cai, X.P., Zhang, J., Yuan, HY. et al. Secretory expression of heterologous protein in Kluyveromyces cicerisporus. Appl Microbiol Biotechnol 67, 364–369 (2005). https://doi.org/10.1007/s00253-004-1834-9
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DOI: https://doi.org/10.1007/s00253-004-1834-9