(B) Euc1 is SUMOylated by Ubc9, Siz1 and Siz2 on K231. Euc1 was immunoprecipitated from the indicated strains and eluates were probed by WB against SUMO (top) and Euc1 (bottom). An up-shifted band corresponding to Euc1SUMO was detected with both antibodies. Asterisks denote non-specific bands. 