PIGR (Polymeric immunoglobulin receptor) is a transmembrane glycoprotein belonging to the immunoglobulin superfamily. It is synthesized by the mucous membranes of the epithelial cells and exocrine glands and later expressed in the cytoplasm and cell membrane.
Synonyms: PIGR Antibody - Anti-PIGR antibody produced in rabbit; Pigr Antibody; Anti-Hepatocellular carcinoma-associated protein TB6; Anti-PIGR; Anti-Poly-Ig receptor; Anti-Polymeric immunoglobulin receptor
Storage: -20C
Application: Anti-PIGR 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: PIGR (Polymeric immunoglobulin receptor) is highly associated with the immunoglobulin transcytosis in the adaptive mucosal immune system. It guides the transport of secretory immunoglobulins until luminal surface of the gut mucosa by interacting with the polymeric immunoglobulin A (pIgA) and immunoglobulin M (pIgM). It forms pIgs-pIgR complex. The complex is cleaved at the apical surface to release the secretory immunoglobulins (sIgs). Its high expressions have been reported in several human cancers including pancreatic cancer. It has been predicted that tumor-specific PIGR expression can be a potential marker in cancer.
Legal Information: Prestige Antibodies is a registered trademark of Sigma-Aldrich Co. LLC