This is a fusion peptide containing amino acids 71 to 89 fragment of the Bak BH3 domain fused to antennapedia peptide. The Bcl-2 homology 3 (BH3) domain is crucial for the death-inducing and dimerization properties of pro-apoptotic members of the Bcl-2 protein family, including Bak, Bax, and Bad. Synthetic peptides corresponding to the BH3 domain of Bak bind to Bcl-xL, antagonize its anti-apoptotic function, and rapidly induce apoptosis when delivered into intact cells via fusion to the antennapedia homeoprotein internalization domain.
Holinger, E. et al. J. Biol. Chem. 274, 13298 (1999).
Sequence (One-Letter Code)
Sequence (Three-Letter Code)
H - Arg - Gln - Ile - Lys - Ile - Trp - Phe - Gln - Asn - Arg - Arg - Met - Lys - Trp - Lys - Lys - Met - Gly - Gln - Val - Gly - Arg - Gln - Leu - Ala - Ile - Ile - Gly - Asp - Asp - Ile - Asn - Arg - Arg - Tyr - OH