Polycystic kidney disease 2-like 1 protein also known as transient receptor potential polycystic 3 (TRPP3) is a protein that in humans is encoded by the PKD2L1 gene.
PKD2L1 is a member of the polycystin protein family. PKD2L1 contains multiple transmembrane domains, and cytoplasmic N- and C-termini. PKD2L1 may be an integral membrane protein involved in cell-cell/matrix interactions. PKD2L1 functions as a calcium-regulated nonselective cation channel. Alternative splice variants have been described but their full length sequences have not been determined.