ASGR1 (Asialoglycoprotein receptor 1) is a Ca2+-dependent, hepatocyte-specific, lectin membrane protein involved in hepatitis B virus (HBV) binding and uptake. This 40-50kDa protein is expressed at the sinusoidal and basolateral hepatocellular membrane of the human liver. It is a hetero-oligomeric compound composed of two homologous, covalently bound polypeptides, called HL-1 (Hepatic Lectin, or ASGPR1, ASGR1) and HL-2 (ASGPR2, ASGR2), with HL-1 as the major subunit.
Synonyms: Anti-ASGP-R 1; Anti-ASGPR 1; Anti-Asialoglycoprotein receptor 1; Anti-Hepatic lectin H1
Storage: -20C
Application: Anti-ASGR1 antibody produced in rabbit, a Prestige Antibody, is developed and validated by the Human Protein Atlas (HPA) project (www.proteinatlas.org). Each antibody is tested by immunohistochemistry against hundreds of normal and disease tissues. These images can be viewed on the Human Protein Atlas (HPA) site by clicking on the Image Gallery link. The antibodies are also tested using immunofluorescence and western blotting. To view these protocols and other useful information about Prestige Antibodies and the HPA, visit sigma.com/prestige.
Biochem Physiol Actions: The transmembrane protein, ASGR1 (Asialoglycoprotein receptor 1), is highly involved in the endocytosis and lysosomal degradation of desialylated proteins from the serum. It binds to desialylated proteins and degrades the extracellular glycoproteins with the release of terminal galactose, lactose or N-acetyl-galactosamine residues. It has been reported that ASGR1 expression is upregulated in embryonic stem cells upon hepatic differentiation.
Legal Information: Prestige Antibodies is a registered trademark of Sigma-Aldrich Co. LLC