Confocal images of MDCK cells expressing mCherry-D4H. Colocalization with the cortical actin (phalloidin) indicates that mCherry-D4H is predominantly localized to the plasma membrane in DMSO treated cells. Within 24 hours of ML-SI1 treatment, the mCherry-D4H redistributes to intracellular punctae. Although minimal mCherry-D4H signal remained at the plasma membrane in ML-SI1-treated cells, the phalloidin signal (cortical actin) remained unchanged. Scale bar (10μm) shown in the panel on the top right applies to all panels. Bar graph showing quantification of mCherry-D4H punctae in DMSO or ML-SI1-treated cells. All values represent mean±SEM. Data points represent values from biological replicates. Statistical test employed was Student's t-test. 