Enables estradiol 17-beta-dehydrogenase activity and prolactin receptor binding activity. Involved in several processes, including estrogen biosynthetic process; response to estradiol; and response to prolactin. Located in membrane. Biomarker of polycystic ovary syndrome. Orthologous to human HSD17B7 (hydroxysteroid 17-beta dehydrogenase 7). [provided by Alliance of Genome Resources, Apr 2022]