Exhibits a lower single conductance but no spontaneous channel activity (PubMed:16883570). May function as a regulator of calcium channels or a channel component involving Ca2(+) homeostasis (By similarity). {ECO:0000250|UniProtKB:Q9JLG4, ECO:0000269|PubMed:16883570}. This is the function of Ensembl gene identifier ENSG00000078795 (PKD2L2, polycystin 2 like 2, transient receptor potential cation channel).