<n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>Estradiol 17-beta-dehydrogenase 1 (328 aa, ~35 kDa) is encoded by the human HSD17B1 gene. This protein is involved in the conversion of both estrogens and androgens to their active intracellular forms.</n0:def-definition><n0:def-source>NCI</n0:def-source></n0:ComplexDefinition>