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Fig. 2. Recruitment of GAK or auxilin to CCPs. Fluorescence intensity of GFP-GAK and mRFP-clathrin observed under a TIRF microscope was analyzed by Metamorph as described in the Materials and Methods. (A) Time course of the change in fluorescence intensities of GFP-GAK (
) and GFP-auxilin (
). (B) Change in fluorescence intensities of GFP-GAK (
) and mRFP-clathrin (
) as a function of time; measured from 56 puncta in 9 cells. (C) Change in fluorescence intensities of GFP-auxilin (
) relative to mRFP-clathrin (
) as a function of time; measured from 41 puncta in 7 cells. Sequential images were taken one frame per second for 2 minutes. The zero time point was set to the time at which the GAK or auxilin reached its maximum.