Figure 6.

Mammalian cell viability assay—Effects of AP3 peptides on HEK-293 cell viability assayed by MTT metabolic breakdown. A standard density of HEK-293 cells was incubated with serially diluted peptides for 24 h at 37 °C before the assay was performed. Percent viability was normalized to MTT breakdown observed in untreated controls. Color coding of the graph is AP3 (red), AP3K (blue), APX (purple), APX-17 (black), and APX-12 (green). All data represent the average of at least three replicates and error bars represent the standard deviation.