HSD3B2

Gene Information
 
Gene Symbol
HSD3B2
 
Aliases
HSD3B, HSDB, SDR11E2
 
Entrez Gene ID
 
Gene Name
Hydroxy-delta-5-steroid dehydrogenase, 3 beta- and steroid delta-isomerase 2
 
Chromosomal Location
1p12
 
HGNC ID
 
Summary
The protein encoded by this gene is a bifunctional enzyme that catalyzes the oxidative conversion of delta(5)-ene-3-beta-hydroxy steroid, and the oxidative conversion of ketosteroids. It plays a crucial role in the biosynthesis of all classes of hormonal steroids. This gene is predominantly expressed in the adrenals and the gonads. Mutations in this gene are associated with 3-beta-hydroxysteroid dehydrogenase, type II, deficiency. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Oct 2009]
 
RefSeq DNA
 
RefSeq mRNA
  e!Ensembl
Gene
Transcript  
Protein

SNPs

SNP
SNP ID
Associated disease
References
G129R
Precocious Pubarche
P222Q
Precocious Pubarche
G250V
Precocious Pubarche
L236S Premature pubarche
T259M Precocious Pubarche

Gene Ontology (GO)

GO ID Ontology Function Evidence Reference
GO:0006694 Biological process Steroid biosynthetic process IBA 21873635
GO:0006694 Biological process Steroid biosynthetic process IDA 1944309
GO:0008207 Biological process C21-steroid hormone metabolic process IBA 21873635
GO:0021766 Biological process Hippocampus development IBA 21873635
GO:0051412 Biological process Response to corticosterone IBA 21873635
Protein Information
 
Protein Name
3 beta-hydroxysteroid dehydrogenase/Delta 5-->4-isomerase type 2, 3 beta-HSD type II, 3 beta-hydroxysteroid dehydrogenase type II, delta 5-delta 4-isomerase type II, 3 beta-HSD type II, 3 beta-hydroxysteroid dehydrogenase/Delta 5-->4-isomerase type II, 3-beta-HSD II, 3-beta-HSD adrenal and gonadal type, 3-beta-hydroxy-5-ene steroid dehydrogenase, 3-beta-hydroxy-Delta(5)-steroid dehydrogenase, delta 5-delta 4-isomerase type II, progesterone reductase, short chain dehydrogenase/reductase family 11E, member 2
 
Function
3-beta-HSD is a bifunctional enzyme, that catalyzes the oxidative conversion of Delta(5)-ene-3-beta-hydroxy steroid, and the oxidative conversion of ketosteroids. The 3-beta-HSD enzymatic system plays a crucial role in the biosynthesis of all classes of hormonal steroids
 
Refseq Proteins
 
UniProt
Pathways
 
KEGG
 
Reactome
 

Steroid hormone biosynthesis
Metabolic pathways
Ovarian steroidogenesis
Aldosterone synthesis and secretion
Cortisol synthesis and secretion
Cushing syndrome

 

Androgen biosynthesis
Mineralocorticoid biosynthesis
Glucocorticoid biosynthesis

     
References
 
 
PubMed ID Disease SNP/Mutation Study population Ethnicity Age of study population Type of sample
Precocious Pubarche 
T259M, G129R, P222Q  
Girls:21,Boys:1 ( six female children with premature pubarche, 12 hirsute females, and one boy with salt-wasting and ambiguous genitalia.) 
 
9 months to 26 yr of age 
Precocious Pubarche 
G250V  
Girls:1 
 
7 months  
Premature pubarche 
 
Total patients- Test: 5 (girls- 4 and boys- 1), Control: 18 (girls- 10 and boys- 8) 
Caucasian, Puerto Rican, African- American 
4 to 9 yrs 
Blood
Premature pubarche 
 
Total Patients- 13 (11 girls and 2 boys), ontrol subjects- 18 (10 girls and 8 boys) 
 
Mean age- 4 years (1 month to 6.7 years; 1 boy was close to 9 years) 
Blood
Premature pubarche 
L236S  
Total Patients- 40 children (PP: 6 boys and 34 girls), 29 adolescent girls (hyperandrogenism), Controls- Women:15 (white) 
Black, White, Asian-white, Black-white 
Group 1 - 4.6-10.75 years, Group 2 - 10.4-18 years  
Blood

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