Evolutionary tree showing the relationship between fungal Gα proteins. The branch on the left includes a family of Gα proteins that function in nutrient sensing, some of which are contained within the box. (Adapted from Figure 2 of Loubradou et al. [174] with permission of the authors and publisher; © 1999, Genetics Society of America.) Um, U. maydis; Sc, S. cerevisiae; Ca, C. albicans; An, A. nidulans; Cp, C. parasitica; Mg, M. grisea; Nc, N. crassa; Cn, C. neoformans; Sp, S. pombe; Cc, Coprinus congregatus; Uh, Ustilago hordei; Pa, Podospora anserina; Kl, Kluyveromyces lactis; Pc, Pneumocystis carinii..