Enables estradiol 17-beta-dehydrogenase activity and testosterone dehydrogenase (NAD+) activity. Involved in several processes, including Leydig cell differentiation; response to fungicide; and response to vitamin. Located in intracellular membrane-bounded organelle. Biomarker of type 2 diabetes mellitus. Human ortholog(s) of this gene implicated in 17-beta hydroxysteroid dehydrogenase 3 deficiency and disorder of sexual development. Orthologous to human HSD17B3 (hydroxysteroid 17-beta dehydrogenase 3). [provided by Alliance of Genome Resources, Apr 2022]