Gene Information
Gene NameHSD3B2
OrganismHomo sapiens (Human)
Gene Length372
Protein Names3 beta-hydroxysteroid dehydrogenase/Delta 5-->4-isomerase type 2 (3 beta-hydroxysteroid dehydrogenase/Delta 5-->4-isomerase type II) (3-beta-HSD II) (3-beta-HSD adrenal and gonadal type) [Includes: 3-beta-hydroxy-Delta(5)-steroid dehydrogenase (EC 1.1.1.145) (3-beta-hydroxy-5-ene steroid dehydrogenase) (Progesterone reductase); Steroid Delta-isomerase (EC 5.3.3.1) (Delta-5-3-ketosteroid isomerase)]
Target Name3 beta-hydroxysteroid dehydrogenase/delta 5-->4-isomerase type 2
Target TypeNA
Gene Age>4290 ( ENSG00000203859 )
Evolutionary StageEuk+Bac
AlphaFoldDBP26439
Gene CardHSD3B2
Uniprot IDP26439
PfamPF01073
In ASDno
Allosteric Predictionyes (0.68013573)
Ortholog in AnimalsAlpaca_ HSD3B2 ( ortholog_one2one )
Dog_ HSD3B2 ( ortholog_many2many )
Macaque_ HSD3B2 ( ortholog_one2one )
Mouse_ Hsd3b6 ( ortholog_many2many )
Mouse_ Hsd3b5 ( ortholog_many2many )
Mouse_ Hsd3b4 ( ortholog_many2many )
Mouse_ Hsd3b1 ( ortholog_many2many )
Mouse_ Hsd3b9 ( ortholog_many2many )
Mouse_ Hsd3b3 ( ortholog_many2many )
Mouse_ Hsd3b8 ( ortholog_many2many )
Mouse_ Hsd3b2 ( ortholog_many2many )
Rat_ Hsd3b2 ( ortholog_many2many )
Rat_ Hsd3b5 ( ortholog_many2many )
Rat_ Hsd3b1 ( ortholog_many2many )
Rat_ Hsd3b3 ( ortholog_many2many )
OhnologsHSD3B7
ParalogsHSD3B1, HSD3B7, GFUS, SDR42E2, GALE, SDR42E1, GMDS, TGDS, UXS1, NSDHL
Tissueadrenal.gland
Tissue SpecificityExpressed in adrenal gland, testis and ovary.
Pharmacological Animal ModelsNA
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB NA 
DBSNP rs28934880  rs28934880  rs4986954  rs757033996  rs6211  rs1388517943  rs587628683  rs80358219  rs779418168  rs35486059  rs762479018  rs759422374  rs765547422  rs80358220  rs35887327  rs1399005702  rs1411029929  rs80358221  rs121964897 
Subcellular location [CC]Endoplasmic reticulum membrane {ECO:0000269|PubMed:25322271};
Single-pass membrane protein {ECO:0000255}. Mitochondrion membrane;
Single-pass membrane protein {ECO:0000255}.
Mouse PG classificationNA
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