Proprotein convertase subtilisin/kexin type 9 (PCSK9), NARC1

PCSK9 binds to the EGF-A domain of the LDLR and signals LDLR degradation. Reduced LDLR levels result in decreased LDL (low density lipid) metabolism leading to hypercholesterolemia. Additioanlly, PCSK9 may be implicated in the differentiation of cortical neurons and may also play a role in cholesterol homeostasis. Defects in PCSK9 gene are the cause of familial hypercholesterolemia 3 (FH3). The protein is thought to play a central role in cholesterol homeostais. For an antibody that targets the blocking epitope of the PCSK-LDLR interaction use X2404P.