Anti-Polymeric immunoglobulin receptor

The Uses of Anti-Polymeric immunoglobulin receptor

All Prestige Antibodies Powered by Atlas Antibodies are developed and validated by the Human Protein Atlas (HPA) project (www.proteinatlas.org)and as a result, are supported by the most extensive characterization in the industry.

The Human Protein Atlas project can be subdivided into three efforts: Human Tissue Atlas, Cancer Atlas, and Human Cell Atlas. The antibodies that have been generated in support of the Tissue and Cancer Atlas projects have been tested by immunohistochemistry against hundreds of normal and disease tissues and through the recent efforts of the Human Cell Atlas project, many have been characterized by immunofluorescence to map the human proteome not only at the tissue level but now at the subcellular level. These images and the collection of this vast data set can be viewed on the Human Protein Atlas (HPA) site by clicking on the Image Gallery link. To view these protocols and other useful information about Prestige Antibodies and the HPA, visit .

General Description

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.

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.