Enables identical protein binding activity. Involved in positive regulation of cold-induced thermogenesis. Acts upstream of or within negative regulation of protein kinase activity; positive regulation of MAPK cascade; and regulation of cell cycle. Predicted to be active in cytoplasm and nucleus. Is expressed in several structures, including alimentary system; central nervous system; genitourinary system; integumental system; and sensory organ. Orthologous to human GADD45G (growth arrest and DNA damage inducible gamma). [provided by Alliance of Genome Resources, Apr 2022]