why 30 degrees?

[FATIMA at AIMP.UNA.AC.AT]

Dear tpillay at ucsd.edu et al.,

The reason why we grow yeast at 30 degrees is that yeast is used
to lower temperatures, since it originally comes from such environments
as e.g. the surface of grapes - unlike E. coli, which, after all, came
from our gut.

Fatima