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SupplementalFigure 2 RPMI8226 cellswereincubatedwithincreasingconcentrationsoftherespective HIV PI (0-160 mM; Am: amprenavir; At: atazanavir; D: darunavir; I: indinavir; T: tipranavir) andintracellular proteasome activity was assessedusingtheaffinity probe MV151. The bargraphsrepresent relative changes in proteasome subunit-specific (b1/b5 vs. b2) fluorescencesignalscomparedtountreatedcontrols. Change in proteasomeactivity [%] β2/2i β5/5i/1/1i Am At D I T [µM] NLVS 0 10 20 40 0 10 20 40 10 20 40 NLVS 0 10 20 40 0 10 20 40 [kD] β2 β2i 30 β1(i)/β5(i) β- actin 20 RPMI8226 MV-151 45