Tags: Protein.
Polymeric immunoglobulin receptor is a protein that in humans is encoded by the PIGR gene.It is a Fc receptor which facilitates the secretion of immunoglobulin A and immunoglobulin M.The poly-Ig receptor is expressed on several glandular epithelia including those of liver and breast. It mediates transcellular transport of polymeric immunoglobulin molecules. It is a member of the immunoglobulin superfamily (Hood et al. 1985).