Abstract
The ability of the yeast Saccharomyces cerevisiae to enter meiosis and sporulate is conferred by the a1-α2 regulatory activity of the mating-type locus. We have cloned the RME1 gene and show that: the RME1 transcript is repressed by a1-α2 in a/α cells; overexpression of the RME1 product in a/α cells blocks sporulation; and inactivation of RME1 by a null mutation constructed in vitro permits cells lacking a1-α2 activity to sporulate. The RME1 product thus inhibits meiosis; the mating-type locus permits entry into meiosis by repression of RME1.
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Mitchell, A., Herskowitz, I. Activation of meiosis and sporulation by repression of the RME1 product in yeast. Nature 319, 738–742 (1986). https://doi.org/10.1038/319738a0
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DOI: https://doi.org/10.1038/319738a0
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