Biliverdin reductase A (BLVRA)

Biliverdin reductase A is a cytosolic enzyme responsible for catalyzing the final step of heme degradation by reducing biliverdin IXα into bilirubin using NADH or NADPH cofactors. This reaction is crucial for maintaining cellular redox balance because both substrates possess antioxidant properties; however, bilirubin is especially potent at neutralizing reactive oxygen species. Beyond its enzymatic activity, BLVRA also acts as a dual-specificity kinase involved in regulating key signaling pathways related to glucose metabolism, cell growth, apoptosis control, and immune responses. Its expression increases under conditions associated with oxidative stress and has been implicated both protectively against tissue injury but also permissively toward tumor growth when overexpressed. The protein’s multifaceted roles make it an emerging therapeutic target across several disease areas including cancer therapy and metabolic disorders.

Other names

Biliverdin-IX alpha-reductaseBLVRBVRBVR AEC 1.3.1.24

For potential inhibitors or modulators under investigation: - Inhibition of kinase/scaffold function to reduce cell proliferation signaling pathways such as MAPK/PI3K/Akt cascade in cancer cells. For endogenous function: - Catalyzes reduction of biliverdin IXα to bilirubin using NADH/NADPH as cofactors—this maintains cellular antioxidant capacity by recycling bilirubin for ROS neutralization.