Identification of sites for alkylation by N-ethylmaleimide and pertussis toxin-catalyzed ADP-ribosylation on GTP-binding proteins - Hoshino, S; Kikkawa, S; Takahashi, K; Itoh, H; Kaziro, Y; Kawasaki, H; Suzuki, K; Katada, T; Ui, M (FEBS Lett, 1990)