Figure 3.
Mutants in the MPS3 SUN domain and in MPS2 exhibit karyogamy defects. Cells from log phase cultures of the indicated mutants were mated at the semipermissive temperature of 30°C for 5 h, and then mating mixtures were stained with DAPI and the position of nuclei in zygotes was observed by fluorescence microscopy. Numbers represent the mean percentage of zygotes with a single mass of DNA (Kar+), two separated masses of DNA (congression−), and two masses of DNA separated by <2 μm (fusion−). 100 zygotes in four independent mating experiments were analyzed.
