Aquaporin 3 (AQP-3) is the protein product of the human AQP3 gene.[5] It is found in the basolateral cell membrane of principal collecting duct cells and provides a pathway for water to exit these cells.[6] Aquaporin-3 is also permeable to glycerol, ammonia, urea, and hydrogen peroxide. It is expressed in various tissues including the skin, respiratory tract, and kidneys as well as various types of cancers.[7] In the kidney, aquaproin-3 is unresponsive to the antidiuretic hormone vasopressin, unlike aquaporin-2.[8] This protein is also a determinant for the GIL blood group system.[9]
^Sasaki S, Ishibashi K, Marumo F (1998). "Aquaporin-2 and -3: representatives of two subgroups of the aquaporin family colocalized in the kidney collecting duct". Annu. Rev. Physiol. 60: 199–220. doi:10.1146/annurev.physiol.60.1.199. PMID9558461.
^Dibas AI, Mia AJ, Yorio, T (1998). "Aquaporins (Water Channels): Role in Vasopressin-Activated Water Transport". Proc. Soc. Exp. Biol. Med. 219 (3): 183–99. doi:10.3181/00379727-219-44332. PMID9824541. S2CID28952956.