JY-1-106 is a BH3 α-helix mimetic, inducing apoptosis in a subset of cancer cells (lung cancer, colon cancer and mesothelioma) by disrupting Bcl-xL and Mcl-1 protein-protein interactions with Bak.
BAD (103-127) (human) is a 25-mer peptide obtained from the BH3 domain of BAD. It effectively counteracts the activity of Bcl-xL. Notably, BAD (103-127) (human) exhibits an approximately 800-fold greater binding affinity for Bcl-xL compared to the 16-mer peptide.
This peptide, generated from the BH3 domain of Bak (Flu-BakBH3), has been shown to have high-affinity binding to a surface pocket of the Bcl-XL protein that is required for its death antagonist function.