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Novel alleles ofcdc13 andcdc2 isolated as suppressors of mitotic catastrophe inSchizosaccharomyces pombe

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Abstract

Cell cycle control in the fission yeastSchizosaccharomyces pombe involves interplay amongst a number of regulatory molecules, including thecdc2, cdc13, cdc25, weel, andmik1 gene products. Cdc2, Cdc13, and Cdc25 act as positive regulators of cell cycle progression at the G2/M boundary, while Wee1 and Mik1 play a negative regulatory role. Here, we have screened for suppressors of the lethal premature entry into mitosis, termed mitotic catastrophe, which results from simultaneous loss of function of both Wee1 and Mik1. Through such a screen, we hoped to identify additional components of the cell cycle regulatory network, and/or G2/M-specific substrates of Cdc2. Although we did not identify such molecules, we isolated a number of alleles of bothcdc2 andcdc13, including a novel wee allele ofcdc2, cdc2-5w. Here, we characterizecdc2-5w and two alleles ofcdc13, which have implications for the understanding of details of the interactions amongst Cdc2, Cdc13, and Wee1.

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Authors and Affiliations

  1. Howard Hughes Medical Institute, Department of Cell Biology, Vanderbilt University, 37212, Nashville, TN, USA

    L. D. Berry & K. L. Gould

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  1. L. D. Berry
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  2. K. L. Gould
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Communicated by D. Y. Thomas

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Berry, L.D., Gould, K.L. Novel alleles ofcdc13 andcdc2 isolated as suppressors of mitotic catastrophe inSchizosaccharomyces pombe . Molec. Gen. Genet. 251, 635–646 (1996). https://doi.org/10.1007/BF02174112

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  • DOI: https://doi.org/10.1007/BF02174112

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