The Bid BH3 is a pro-apoptotic member of the "BH3-only" subset of BCL-2 family proteins that constitute a critical control point in apoptosis. r8BIDBH3 is lethal to human leukemia cell lines that expresse Bcl-2. The Bcl-2 antagonists may have the potential to be efficacious in cancer therapy. Poly-D-arginine (d-isomer as denoted by rrrrrrrr) is fused to the Bid BH3 peptide to facilitate cellular uptake of the peptide.
Letai, A. J.Clin. Invest. 115, 2648 (2005); Mendoza, F. et al. Arch. Immunol. Ther. Exp.53, 47 (2002).
Sequence (One-Letter Code)
Sequence (Three-Letter Code)
H - D - Arg - D - Arg - D - Arg - D - Arg - D - Arg - D - Arg - D - Arg - D - Arg - Gly - Glu - Asp - Ile - Ile - Arg - Asn - Ile - Ala - Arg - His - Leu - Ala - Gln - Val - Gly - Asp - Ser - Met - Asp - Arg