SR-BI Products

Description

SR-BI (scavenger receptor class B member 1, SCARB1) belongs to the CD36 family and acts as a cell surface lipoprotein receptor for a variety of ligands including high density lipoprotein (HDL), phospholipids, phosphatidylserine, and lipoproteins such as lipopolysaccharide (LPS). SR-BI mediates selective uptake of HDL cholesteryl (HDL-C) ester in the liver, steroidogenic tissues, and adipose tissue and facilitates the flux of free and esterified cholesterol between the cell surface and apoB-containing lipoproteins and modified lipoproteins. SR-BI plays a role in antigen capture and cross-presentation from bacteria, parasites, and viruses such as Hepatitis C. In endothelial cells and macrophages, SR-BI is involved in anti-inflammatory and pro-survival signaling, providing protection against atherosclerosis and clearing apoptotic cells (efferocytosis) (1, 2).

At least 5 different human splice variants have been identified with theoretical molecular weights ranging from 60.9 kDa for the canonical sequence to 45 kDa for an N-terminally truncated variant (SR-BII) (3). The extracellular domain of human SR-BI (CLA-1) shares 80%, 80%, 89%, 86% and 84% aa sequence identity with mouse, rat, porcine, rabbit, and bovine SR-BI, respectively. SR-BI is highly glycosylated and removal of N-linked glycosylation reduces lipid transport.

References

1. Linton MF, Tao H, Linton EF, Yancey PG. (2017) SR-BI: A Multifunctional Receptor in Cholesterol Homeostasis and Atherosclerosis. Trends Endocrinol Metab. 28(6):461-472. PMID: 28259375

2. Hoekstra M, Sorci-Thomas M. (2017) Rediscovering scavenger receptor type BI: surprising new roles for the HDL receptor. Curr Opin Lipidol. 28(3):255-260. PMID: 28301373

3. Shen WJ, Asthana S, Kraemer FB, Azhar S. (2018) Scavenger receptor B type 1: expression, molecular regulation, and cholesterol transport function.

Bioinformatics

Entrez	20778 Mouse 25073 Rat 949 Human
Uniprot	P97943 Rat Q61009 Mouse Q8WTV0 Human
Product By Gene ID	949
Alternate Names	CD36 and LIMPII analogous 1 CD36 antigen (collagen type I receptor, thrombospondin receptor)-like 1 CD36 antigen CD36L1scavenger receptor class B type 1 CLA1 CD36 antigen-like 1 CLA-1 HDLQTL6 Collagen type I receptor, thrombospondin receptor-like 1 MGC138242 SCARB1 scavenger receptor class B type III scavenger receptor class B, member 1 SRB1 scavenger receptor class B member 1 SR-B1 SRBI

Research Areas for SR-BI

Find related products by research area and learn more about each of the different research areas below.

Breast Cancer
Cancer
Cholesterol Metabolism
Lipid and Metabolism
Signal Transduction

Related SR-BI Blog Posts

Check out the latest blog posts on SR-BI.

Scavenger's Helper - SR-BI (scavenger receptor class B member 1, SCARB1) SR-B1 belongs to the CD36 scavenger receptor family and serves as a receptor for several ligands including phospholipids, cholesterol ester, lipoproteins, phosphatidylserine, and caveolae localized HDL. It is expressed in endothelial cells, macrophage...    Read more.

ABCA1 - The Caretaker for Cholesterol Transportation The ATP-binding cassette transporter A1 (ABCA1) protein is a key gatekeeper for regulating intracellular cholesterol transport. It is one member of a large family of genes comprised of cAMP-dependent anion transporter cell membrane proteins. These imp...    Read more.

ABCA1 (ATP-binding cassette transporter A1) The ABCA1 molecule is a primary gatekeeper for regulating the intracellular transport of cholesterol. It belongs to a larger related multifamily of cAMP-dependent anion transporter cell membrane molecules. These key proteins are responsible for tr...    Read more.

Read more SR-BI related blogs.