Figure 4. Characterization of additional FKBP mutants.
A, FKBP-YFP fusions were either mock-treated (−) or treated with 1 μM Shield-1 (+) and YFP expression levels were monitored by flow cytometry. Data are presented as the average MFI ± SEM relative to that of the parent F36V FKBP.
B, NIH3T3 cells stably expressing FKBP-YFP fusion proteins were treated with 1 μM Shield-1 for 24 hr. The cells were then washed with media to remove Shield-1, and decreases in fluorescence intensity were monitored by flow cytometry: V2A-YFP (squares), V4A-YFP (triangles), V2A/I7V-YFP (diamonds) and V4A/I7V-YFP (circles).
