This family of proteins are transient receptor potential (TRP) ion channels. They are essential for cellular viability and are involved in cell growth and cell wall synthesis [1]. The genes for these proteins are homologous to polycystic kidney disease related ion channel genes [1].

1: A microbial TRP-like polycystic kidney disease related ion channel gene. Palmer CP, Aydar E, Djamgoz MB; Biochem J 2004; [Epub ahead of print] PMID:15537393