Enables calcium activated cation channel activity. Involved in several processes, including ion homeostasis; negative regulation of osteoblast differentiation; and regulation of blood circulation. Located in several cellular components, including Golgi apparatus; endoplasmic reticulum; and neuronal cell body. Biomarker of cardiac arrest. Human ortholog(s) of this gene implicated in erythrokeratodermia variabilis et progressiva 6 and progressive familial heart block type IB. Orthologous to human TRPM4 (transient receptor potential cation channel subfamily M member 4). [provided by Alliance of Genome Resources, Apr 2022]