I am using cells derived from the deletion set (s288c) and would like to select diploids using the met15 marker (i.e. lys2delta0 in alphass, met15delta0 in a's). Unfortunately, I just don't see growth (after 1 week) on SD-met plates in the MET15+ strain. Apparently I am not the only person in my lab with this difficulty.
I have checked our dropout recipe and it seems pretty standard. I was wondering if this is some sort of known problem with the deletion set, or whether we are just somehow ignorant to the subtleties of using met15 as a marker. Any assistance would be greatly appreciated.
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