Limited proteolysis of coatomer. Proteolysis of
coatomer (0.09 μM) with thermolysin (0.008 μM) in the presence of
dimerized peptides (50 μM) p23wt-d (A), p23AS-d
(B), and Wbp1p-d (C). Western blot analysis of
proteolytic fragments of the γ-COP subunit reveals a better
susceptibility of this subunit to the protease in the presence of
p23wt-d (A, lanes 2 and 3) as compared with p23AS-d
(B, lanes 2 and 3 h) and Wbp1p-d (C,
lanes 2 and 3 h).