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. Author manuscript; available in PMC: 2012 Jul 19.
Published in final edited form as: J Med Chem. 2009 May 28;52(10):3328–3341. doi: 10.1021/jm900253g

Figure 1.

Figure 1

Stimulation of human P-gp ATPase activity by compounds 30-S and 31-S. Histidine-tagged P-glycoprotein was expressed in BHK cells, isolated by nickel-chelate chromatography and mixed with lipid. P-glycoprotein ATPase activity was then measured in the presence of various concentrations of rhodamine derivatives 30-S or 31-S. Error bars represent one standard deviation from the mean.