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S. cerevisiae K28 toxin – a secreted virus toxin of the A/B family of protein toxins

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Part of the book series: Topics in Current Genetics ((TCG,volume 11))

Abstract

Since the initial discovery of toxin-secreting killer strains in the yeast Saccharomyces cerevisiae more than 40 years ago, continuous research on this wide-spread phenomenon substantially strengthened our knowledge in different areas of modern biology, providing deeper insights into basic aspects of eukaryotic cell biology and virus-host cell interactions. This chapter will focus on the K28 killer system in S. cerevisiae, in particular the toxin-encoding K28 killer virus ScV-M28 and the intracellular processing, maturation, and toxicity of its viral protein toxin. The toxin’s receptor-mediated mode of action, its strategy to penetrate and to finally kill a eukaryotic target cell will be discussed, and the mechanism of toxin immunity, i.e. the question of how a virus-infected killer yeast cell resists its own toxin, will be addressed.

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Manfred J. Schmitt Raffael Schaffrath

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Leis, S., Spindler, J., Reiter, J., Breinig, F., Schmitt, M.J. S. cerevisiae K28 toxin – a secreted virus toxin of the A/B family of protein toxins. In: Schmitt, M.J., Schaffrath, R. (eds) Microbial Protein Toxins. Topics in Current Genetics, vol 11. Springer, Berlin, Heidelberg. https://doi.org/10.1007/b100194

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