Figure 6.
The BAD BH3 domain peptide de-represses BCL-xL to promote BAK/BAX activation and cytochrome c release. (A) C8-BID and BCL-xL were combined and incubated for 10 minutes at 37°C before the addition of BAD BH3 domain peptide and C57Bl/6 mitochondria. The reactions were incubated for an additional 60 minutes at 37°C before fractionation, SDS-PAGE, and western blot for cytochrome c. (B) C8-BID and BCL-xL were combined and incubated for 10 minutes at 37°C before the addition of BAX, BAD BH3 domain peptide, and bak−/−bax−/− mitochondria. The reactions were incubated for an additional 60 minutes at 37°C before fractionation, SDS-PAGE, and western blot for cytochrome c.