PUMABH3 is a p53 upregulated modulator of apoptosis (PUMA) BH3 domain peptide that acts as a direct activator of Bak with a Kd of 26 nM. This peptide binds Bcl-2, localizes to mitochondria, and induces cytochrome C release.
PUMAi is an inhibitor of p53 up-regulated modulator of apoptosis (PUMA), a BH3-only Bcl-2 family member, mitigating acetaminophen (APAP)-induced hepatocyte necrosis and liver injury.