UNC80 is a family of proteins found in eukaryotes. This entry represents the N-terminal domain. NALCN and UNC80 form a complex in mouse brain, both being tyrosine-phosphorylated; this phosphorylation can be inhibited by PP1. NALCN as the cation channel activated by substance P receptor, and the coupling from receptor to channel is facilitated by UNC80 and Src kinases rather than by a G-protein [1,2].

1: A putative cation channel and its novel regulator: cross-species conservation of effects on general anesthesia. Humphrey JA, Hamming KS, Thacker CM, Scott RL, Sedensky MM, Snutch TP, Morgan PG, Nash HA; Curr Biol. 2007;17:624-629. PMID:17350263

2: Peptide neurotransmitters activate a cation channel complex of NALCN and UNC-80. Lu B, Su Y, Das S, Wang H, Wang Y, Liu J, Ren D; Nature. 2009;457:741-744. PMID:19092807