FIGURE 3:
Fes1S is a cytosolic protein, and Fes1L is targeted to the nucleus by a C-terminal NLS. (A) An NLS-like sequence in the C-terminus of Fes1L and the changes in amino acid sequence of the Fes1L mutant K/R → E. (B) Western analysis of C-terminally GFP-tagged Fes1S, Fes1L, and K/R → E expressed from plasmids with the endogenous FES1 promoter in fes1Δ cells. (C) Fluorescence microscopy localization of the GFP fusions in B. The nucleus is labeled with mCherry-tagged Histone 2B (Htb2). Scale bar, 10 μM.