Identification
HMDB Protein ID CDBP00663
Secondary Accession Numbers Not Available
Name 3-oxo-5-alpha-steroid 4-dehydrogenase 1
Description Not Available
Synonyms
  1. S5AR 1
  2. SR type 1
  3. Steroid 5-alpha-reductase 1
Gene Name SRD5A1
Protein Type Enzyme
Biological Properties
General Function Involved in 3-oxo-5-alpha-steroid 4-dehydrogenase activity
Specific Function Converts testosterone into 5-alpha-dihydrotestosterone and progesterone or corticosterone into their corresponding 5-alpha-3-oxosteroids. It plays a central role in sexual differentiation and androgen physiology.
GO Classification
Biological Process
cellular response to insulin stimulus
response to fungicide
spinal cord development
thalamus development
female genitalia development
hypothalamus development
progesterone metabolic process
cellular response to cAMP
cell differentiation
response to growth hormone stimulus
cellular response to starvation
cellular response to testosterone stimulus
male gonad development
cerebral cortex development
bone development
liver development
male genitalia development
response to drug
serotonin metabolic process
cellular response to epinephrine stimulus
cellular response to growth factor stimulus
cellular response to estradiol stimulus
pituitary gland development
circadian sleep/wake cycle, REM sleep
cellular response to dexamethasone stimulus
diterpenoid metabolic process
small molecule metabolic process
androgen biosynthetic process
response to muscle activity
sex determination
response to follicle-stimulating hormone stimulus
urogenital system development
hippocampus development
Cellular Component
cell body fiber
myelin sheath
neuronal cell body
integral to membrane
endoplasmic reticulum membrane
perinuclear region of cytoplasm
Component
membrane
cell part
intracellular part
cytoplasm
membrane part
intrinsic to membrane
integral to membrane
Function
steroid dehydrogenase activity
oxidoreductase activity, acting on the ch-ch group of donors
catalytic activity
steroid dehydrogenase activity, acting on the ch-ch group of donors
3-oxo-5-alpha-steroid 4-dehydrogenase activity
oxidoreductase activity
Molecular Function
electron carrier activity
amide binding
3-oxo-5-alpha-steroid 4-dehydrogenase activity
cholestenone 5-alpha-reductase activity
NADPH binding
Process
metabolic process
primary metabolic process
oxidation reduction
lipid metabolic process
steroid metabolic process
Cellular Location
  1. Multi-pass membrane protein (Potential)
  2. Endoplasmic reticulum membrane
  3. Multi-pass membrane protein
  4. Microsome membrane
Pathways
Gene Properties
Chromosome Location 5
Locus 5p15
SNPs SRD5A1
Gene Sequence
>780 bp
ATGGCAACGGCGACGGGGGTGGCGGAGGAGCGCCTGCTGGCCGCGCTCGCCTACCTGCAG
TGCGCCGTGGGCTGCGCGGTCTTCGCGCGGAATCGTCAGACGAACTCAGTGTACGGCCGC
CACGCGCTGCCCAGCCACAGGCTCCGAGTGCCGGCGCGGGCCGCCTGGGTGGTGCAGGAG
CTGCCCTCGCTGGCCCTGCCGCTCTACCAGTACGCCAGCGAGTCCGCCCCGCGTCTCCGC
AGCGCGCCCAACTGCATCCTCCTGGCCATGTTCCTCGTCCACTACGGGCATCGGTGCTTA
ATTTACCCGTTTCTGATGCGAGGAGGAAAGCCTATGCCACTGTTGGCATGTACAATGGCG
ATTATGTTCTGTACCTGTAACGGCTATTTGCAAAGCAGATACTTGAGCCATTGTGCAGTG
TATGCTGATGACTGGGTAACAGATCCCCGTTTTCTAATAGGTTTTGGCTTGTGGTTAACA
GGCATGTTGATAAACATCCATTCAGATCATATCCTAAGGAATCTCAGAAAACCAGGAGAT
ACTGGATACAAAATACCAAGGGGAGGCTTATTTGAATACGTAACTGCAGCCAACTATTTT
GGAGAAATCATGGAGTGGTGTGGCTATGCCCTGGCCAGCTGGTCTGTCCAAGGCGCGGCT
TTTGCTTTCTTCACGTTTTGTTTTTTATCTGGTAGAGCAAAAGAGCATCATGAGTGGTAC
CTCCGGAAATTTGAAGAGTATCCAAAGTTCAGAAAAATTATAATTCCATTTTTGTTTTAA
Protein Properties
Number of Residues 259
Molecular Weight 29458.18
Theoretical pI 8.942
Pfam Domain Function
Signals Not Available
Transmembrane Regions Not Available
Protein Sequence
>3-oxo-5-alpha-steroid 4-dehydrogenase 1
MATATGVAEERLLAALAYLQCAVGCAVFARNRQTNSVYGRHALPSHRLRVPARAAWVVQE
LPSLALPLYQYASESAPRLRSAPNCILLAMFLVHYGHRCLIYPFLMRGGKPMPLLACTMA
IMFCTCNGYLQSRYLSHCAVYADDWVTDPRFLIGFGLWLTGMLINIHSDHILRNLRKPGD
TGYKIPRGGLFEYVTAANYFGEIMEWCGYALASWSVQGAAFAFFTFCFLSGRAKEHHEWY
LRKFEEYPKFRKIIIPFLF
GenBank ID Protein Not Available
UniProtKB/Swiss-Prot ID P18405
UniProtKB/Swiss-Prot Entry Name S5A1_HUMAN
PDB IDs Not Available
GenBank Gene ID M32313
GeneCard ID SRD5A1
GenAtlas ID SRD5A1
HGNC ID HGNC:11284
References
General References Not Available