Enables metal ion binding activity; palmitoyl-CoA 9-desaturase activity; and stearoyl-CoA 9-desaturase activity. Involved in several processes, including cholesterol esterification; positive regulation of cold-induced thermogenesis; and tarsal gland development. Acts upstream of or within several processes, including brown fat cell differentiation; monounsaturated fatty acid biosynthetic process; and white fat cell differentiation. Is integral component of endoplasmic reticulum membrane. Is expressed in several structures, including adipose tissue; central nervous system; cranium; integumental system; and liver. Human ortholog(s) of this gene implicated in autosomal dominant nonsyndromic deafness 79. Orthologous to several human genes including SCD (stearoyl-CoA desaturase). [provided by Alliance of Genome Resources, Apr 2022]