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- W2911709305 abstract "Abstract In the fission yeast Schizosaccharomyces pombe , the mating reaction is controlled by two mating pheromones, M-factor and P-factor, secreted by M- and P-type cells, respectively. M-factor is a C-terminally farnesylated lipid peptide, whereas P-factor is a simple peptide. To examine whether this chemical asymmetry in the two pheromones is essential for conjugation, we constructed a mating system in which either pheromone can stimulate both M- and P-cells, and examined whether the resulting autocrine strains can mate. Autocrine M-cells responding to M-factor successfully mated with P-factor-less P-cells, indicating that P-factor is not essential for conjugation; by contrast, autocrine P-cells responding to P-factor were unable to mate with M-factor-less M-cells. The sterility of the autocrine P-cells was completely recovered by expressing the M-factor receptor. These observations indicate that the different chemical characteristics of the two types of pheromone, a lipid and a simple peptide, are not essential; however, a lipid peptide is absolutely required for successful mating. Our findings allow us to propose a model of the differential roles of M-factor and P-factor in conjugation of S. pombe . Summary statement Lipid pheromone peptides secreted locally from one cell may be concentrated at the fusion site with an opposite mating-type cell, which then polarizes to enable successful conjugation in S. pombe ." @default.
- W2911709305 created "2019-02-21" @default.
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- W2911709305 date "2019-02-13" @default.
- W2911709305 modified "2023-10-17" @default.
- W2911709305 title "The asymmetric chemical structures of two mating pheromones reflect their differential roles in conjugation of Schizosaccharomyces pombe" @default.
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- W2911709305 doi "https://doi.org/10.1101/548586" @default.
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