Enables ethanolamine kinase activity. Involved in phosphorylation. Acts upstream of or within several processes, including in utero embryonic development; phosphatidylethanolamine biosynthetic process; and placenta development. Predicted to be active in cytoplasm. Is expressed in several structures, including genitourinary system; heart; intestine; liver; and lung. Orthologous to human ETNK2 (ethanolamine kinase 2). [provided by Alliance of Genome Resources, Apr 2022]