SREBP2 - regulating cholesterol homeostasis and lipid metabolism

SREBP: Gatekeeper of Cholesterol Homeostasis

SREBP1 (sterol-regulatory-element-binding protein 2) is a basic-helix-loop-helix-leucine zipper (bHLH-ZIP) transcription factor. It regulates sterol and cholesterol homeostasis by controlling enzymes involved in cholesterol synthesis and uptake, e.g. HMG-CoA. The SREBP1 antibody was used in fundamental studies to dissect SREBP1 domains and downstream signaling (1).

SREBPs: Global Regulator of Lipid Metabolism

Sterol regulatory element binding proteins (SREBPs) are indirectly required for cholesterol biosynthesis and for uptake and fatty acid biosynthesis. There are three known SREBP isoforms, SREBP1a, 1c and SREBP2; these have different roles in lipid synthesis.

SREBP2: From Cholesterol Homeostasis to Cancer Invasion

ABCA1 Expression is Down-Regulated by SREBP microRNA

The ABCA1 (ATP-binding cassette transporter-A1) gene encodes a transmembrane protein, which plays a major role in phospholipid homeostasis by regulating cholesterol efflux from the cell. ABCA1 antibody studies have shown ABCA1 expression is up/down regulated by the transcription factors LXR and SREBP2 respectively.