Figure 5. Flow cytometric measurements of wild-type and mutant LDLR internalization activity in transfected HEK-293 cells.
The transfected cells were incubated in serum-free media containing 20 μg/ml Dil-LDL at 37°C for 4 hours. The upper-right area of the dot plots represents EGFP and LDLR double positive cells. (A) Transfected with wild-type; (B) Transfected with the G615V mutant LDLR; (C) Transfected with the C201F mutant LDLR; (D) The histogram shows the percentage of fluorescence for each of the mutations relative to wild-type LDLR. The results are representative of the means ± SD for three independent experiments.