HSD3B1, Official Symbol HSD3B1provided by HGNC Official Full Name hydroxy-delta-5-steroid dehydrogenase, 3 beta- and steroid delta-isomerase 1provided by HGNC Primary source HGNC:HGNC:5217 See related Ensembl:ENSG00000203857 MIM:109715; AllianceGenome:HGNC:5217 Gene type protein coding RefSeq status REVIEWED Organism Homo sapiens Lineage Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo Also known as HSD3B; HSDB3; HSDB3A; SDR11E1; 3BETAHSD Summary The protein encoded by this gene is an enzyme that catalyzes the oxidative conversion of delta-5-3-beta-hydroxysteroid precursors into delta-4-ketosteroids, which leads to the production of all classes of steroid hormones. The encoded protein also catalyzes the interconversion of 3-beta-hydroxy- and 3-keto-5-alpha-androstane steroids. [provided by RefSeq, Jun 2016] Expression Restricted expression toward placenta (RPKM 60.6) See more Orthologs mouse all