Anti-PIGR antibody produced in rabbit

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.

Polymeric immunoglobulin receptor Precursor recombinant protein epitope signature tag (PrEST)

All Prestige Antibodies Powered by Atlas Antibodies are developed and validated by the Human Protein Atlas (HPA) project 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. We also provide Prestige Antibodies^® protocols and other useful information.

Anti-PIGR antibody produced in rabbit, a Prestige Antibody, is developed and validated by the Human Protein Atlas (HPA) project . 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.

Immunofluorescence Analysis: A 1:100 dilution from a representative lot detected PIGR in human colon and human colon intestinal organoids.

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.

Prestige Antibodies^® are highly characterized and extensively validated antibodies with the added benefit of all available characterization data for each target being accessible via the Human Protein Atlas portal linked just below the product name at the top of this page. The uniqueness and low cross-reactivity of the Prestige Antibodies^® to other proteins are due to a thorough selection of antigen regions, affinity purification, and stringent selection. Prestige antigen controls are available for every corresponding Prestige Antibody and can be found in the linkage section.

Every Prestige Antibody is tested in the following ways:

• IHC tissue array of 44 normal human tissues and 20 of the most common cancer type tissues.
• Protein array of 364 human recombinant protein fragments.

Solution in phosphate-buffered saline, pH 7.2, containing 40% glycerol and 0.02% sodium azide

Corresponding Antigen APREST70267

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