Identification
HMDB Protein ID CDBP02411
Secondary Accession Numbers Not Available
Name 3 beta-hydroxysteroid dehydrogenase/Delta 5-->4-isomerase type 1
Description Not Available
Synonyms
  1. 3 beta-hydroxysteroid dehydrogenase/Delta 5-->4-isomerase type I
  2. 3-beta-HSD I
  3. 3-beta-hydroxy-5-ene steroid dehydrogenase
  4. 3-beta-hydroxy-Delta(5)-steroid dehydrogenase
  5. Delta-5-3-ketosteroid isomerase
  6. Progesterone reductase
  7. Steroid Delta-isomerase
  8. Trophoblast antigen FDO161G
Gene Name HSD3B1
Protein Type Enzyme
Biological Properties
General Function Involved in 3-beta-hydroxy-delta5-steroid dehydrogenase activity
Specific 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. Efficiently catalyzes the transformation of pregnenolone to progesterone, 17-alpha-hydroxypregnenolone to 17-alpha-hydroxyprogesterone, DHEA to 4-androstenedione, dihydrotestosterone to 5-alpha-androstane-3 beta,17 beta-diol, dehydroepiandrosterone to androstenedione and 5-alpha-androstan-3 beta,17 beta-diol to 5-alpha-dihydrotestosterone.
GO Classification
Biological Process
estrogen biosynthetic process
glucocorticoid biosynthetic process
mineralocorticoid biosynthetic process
small molecule metabolic process
androgen biosynthetic process
Cellular Component
integral to membrane
mitochondrial inner membrane
mitochondrial intermembrane space
smooth endoplasmic reticulum membrane
Function
binding
catalytic activity
oxidoreductase activity
steroid dehydrogenase activity
steroid dehydrogenase activity, acting on the ch-oh group of donors, nad or nadp as acceptor
3-beta-hydroxy-delta5-steroid dehydrogenase activity
Molecular Function
3-beta-hydroxy-delta5-steroid dehydrogenase activity
nucleotide binding
steroid delta-isomerase activity
Process
metabolic process
primary metabolic process
lipid metabolic process
steroid metabolic process
steroid biosynthetic process
Cellular Location
  1. Endoplasmic reticulum membrane
  2. Mitochondrion membrane
  3. Single-pass membrane protein
  4. Single-pass membrane protein
Pathways
Gene Properties
Chromosome Location 1
Locus 1p13.1
SNPs HSD3B1
Gene Sequence
>1122 bp
ATGACGGGCTGGAGCTGCCTTGTGACAGGAGCAGGAGGGTTTCTGGGACAGAGGATCATC
CGCCTCTTGGTGAAGGAGAAGGAGCTGAAGGAGATCAGGGTCTTGGACAAGGCCTTCGGA
CCAGAATTGAGAGAGGAATTTTCTAAACTCCAGAACAAGACCAAGCTGACAGTGCTGGAA
GGAGACATTCTGGATGAGCCATTCCTGAAGAGAGCCTGCCAGGACGTCTCGGTCATCATC
CACACCGCCTGTATCATTGATGTCTTCGGTGTCACTCACAGAGAGTCTATCATGAATGTC
AATGTGAAAGGTACCCAGCTCCTGTTAGAGGCCTGTGTCCAAGCTAGTGTGCCAGTCTTC
ATCTACACCAGTAGCATAGAGGTAGCCGGGCCCAACTCCTACAAGGAAATCATCCAGAAT
GGCCATGAAGAAGAGCCTCTGGAAAACACATGGCCCGCTCCATACCCACACAGCAAAAAG
CTTGCTGAGAAGGCTGTACTGGCGGCTAACGGGTGGAATCTGAAAAACGGCGGCACCCTG
TACACTTGTGCCTTACGACCCATGTATATCTATGGGGAAGGAAGCCGATTCCTTTCTGCT
AGTATAAACGAGGCCCTGAACAACAATGGGATCCTGTCAAGTGTTGGAAAGTTCTCCACT
GTTAACCCAGTCTATGTTGGCAATGTGGCCTGGGCCCACATTCTGGCCTTGAGGGCCCTG
CAGGACCCCAAGAAGGCCCCAAGCATCCGAGGACAGTTCTACTATATCTCAGATGACACG
CCTCACCAAAGCTATGATAACCTTAATTACACCCTGAGCAAAGAGTTCGGCCTCCGCCTT
GATTCCAGATGGAGCTTTCCTTTATCCCTGATGTATTGGATTGGCTTCCTGCTGGAAATA
GTGAGCTTCCTACTCAGGCCAATTTACACCTATCGACCGCCCTTCAACCGCCACATAGTC
ACATTGTCAAATAGCGTATTCACCTTCTCTTATAAGAAGGCTCAGCGAGATCTGGCGTAT
AAGCCACTCTACAGCTGGGAGGAAGCCAAGCAGAAAACGGTGGAGTGGGTTGGTTCCCTT
GTGGACCGGCACAAGGAGACCCTGAAGTCCAAGACTCAGTGA
Protein Properties
Number of Residues 373
Molecular Weight 42251.25
Theoretical pI 8.712
Pfam Domain Function
Signals Not Available
Transmembrane Regions Not Available
Protein Sequence
>3 beta-hydroxysteroid dehydrogenase/Delta 5-->4-isomerase type 1
MTGWSCLVTGAGGFLGQRIIRLLVKEKELKEIRVLDKAFGPELREEFSKLQNKTKLTVLE
GDILDEPFLKRACQDVSVIIHTACIIDVFGVTHRESIMNVNVKGTQLLLEACVQASVPVF
IYTSSIEVAGPNSYKEIIQNGHEEEPLENTWPAPYPHSKKLAEKAVLAANGWNLKNGGTL
YTCALRPMYIYGEGSRFLSASINEALNNNGILSSVGKFSTVNPVYVGNVAWAHILALRAL
QDPKKAPSIRGQFYYISDDTPHQSYDNLNYTLSKEFGLRLDSRWSFPLSLMYWIGFLLEI
VSFLLRPIYTYRPPFNRHIVTLSNSVFTFSYKKAQRDLAYKPLYSWEEAKQKTVEWVGSL
VDRHKETLKSKTQ
GenBank ID Protein Not Available
UniProtKB/Swiss-Prot ID P14060
UniProtKB/Swiss-Prot Entry Name 3BHS1_HUMAN
PDB IDs Not Available
GenBank Gene ID M27137
GeneCard ID HSD3B1
GenAtlas ID HSD3B1
HGNC ID HGNC:5217
References
General References Not Available