Figure 5. Nocodazole destabilizes the Rab5a cycle on macropinosomes.
(A) Rab5a activation on a macropinosome of a cell in nocodazole; top, phase-contrast; bottom, EO, phase-contrast with overlay showing inactive CFP-Rab5a (red) and active CFP-Rab5a (green), with the threshold for CFP-Rab5a activation set at EAVG = 10%. Rab5a activity fluctuates on the macropinosome. Scale bar = 5 μm. (B–E) Individual traces from macropinosomes in nocodazole-treated cells.
