Polymeric immunoglobulin receptor
（重定向自PIGR）
![](/Images/godic/202502/02/Protein_PIGR_PDB_1xed4434.png")
![](/Images/godic/202502/02/PBB_GE_PIGR_204213_at_tn4434.png")
![](/Images/godic/202502/02/PDB_1xed_EBI4435.jpg")
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 the soluble polymeric isoforms of immunoglobulin A and immunoglobulin M.