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Information on EC 1.1.1.270 - 3beta-hydroxysteroid 3-dehydrogenase and Organism(s) Homo sapiens and UniProt Accession Q04828

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IUBMB Comments
The enzyme acts on multiple 3beta-hydroxysteroids. Participates in the biosynthesis of zemosterol and cholesterol, where it catalyses the reaction in the opposite direction to that shown. The mammalian enzyme is bifunctional and also catalyses EC 1.1.1.62, 17beta-estradiol 17-dehydrogenase .
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This record set is specific for:
Homo sapiens
UNIPROT: Q04828
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Word Map
The taxonomic range for the selected organisms is: Homo sapiens
The expected taxonomic range for this enzyme is: Eukaryota, Bacteria
Synonyms
3beta-hydroxysteroid dehydrogenase, hsd3b1, akr1c2, hsd17b7, erg27, 3beta-hsd1, 3-ketosteroid reductase, 3beta-hsd2, 3-ketoreductase, erg27p, more
SYNONYM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
3-ketosteroid reductase
-
3beta-hydroxysteroid dehydrogenase
-
17beta-HSD7
-
17beta-hydroxysteroid dehydrogenase type 7
-
3-keto reducing enzyme
-
-
-
-
3-keto reductase
-
-
-
-
3-ketoreductase
-
-
-
-
3-ketosteroid reductase
3-KSR
-
-
-
-
3-oxo steroid reductase
-
-
-
-
3-oxosteroid reductase
-
-
-
-
3beta-HSD1
3beta-HSD2
-
-
3beta-hydroxysteroid dehydrogenase
-
-
3beta-hydroxysteroid dehydrogenase type 1
3beta-hydroxysteroid dehydrogenase/Delta 5->4-isomerase type 1
-
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3beta-hydroxysteroid dehydrogenase/Delta 5->4-isomerase type 2
-
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AKR1C1
-
-
aldo-keto reductase 1C2
-
-
HSD17B7
reductase, 3-oxo steroid
-
-
-
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SDR11E1
-
-
SDR11E2
-
-
steroid-3-ketoreductase
-
-
-
-
sterone-reducing enzyme
-
-
-
-
type 3 3alpha-hydroxysteroid dehydrogenase
-
-
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
a 3beta-hydroxysteroid + NADP+ = a 3-oxosteroid + NADPH + H+
show the reaction diagram
residues Leu/Val54, Tyr55, His117, Val128, Ile129, His222, and Trp227 are involved in substrate binding, Tyr55, Asp50, Lys84, and His117 form the catalytic tetrad, Tyr55 and His117 together with NADP+ form an oxyanion hole through hydrogen bond networks, molecular docking simulations, detailed overview
a 3beta-hydroxysteroid + NADP+ = a 3-oxosteroid + NADPH + H+
show the reaction diagram
stereoselectivity : #1,4,5# catalyzes reduction of the 3-keto group to a 3beta-hydroxyl group <5,6,7>
-
REACTION TYPE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
redox reaction
-
-
-
-
PATHWAY SOURCE
PATHWAYS
-
-, -, -, -, -, -, -, -, -
SYSTEMATIC NAME
IUBMB Comments
3beta-hydroxysteroid:NADP+ 3-oxidoreductase
The enzyme acts on multiple 3beta-hydroxysteroids. Participates in the biosynthesis of zemosterol and cholesterol, where it catalyses the reaction in the opposite direction to that shown. The mammalian enzyme is bifunctional and also catalyses EC 1.1.1.62, 17beta-estradiol 17-dehydrogenase [4].
CAS REGISTRY NUMBER
COMMENTARY hide
42616-29-5
-
SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
2 17beta-hydroxy-5alpha-androstan-3-one + 2 NADPH + 2 H+
5alpha-androstane-3beta,17beta-diol + 5alpha-androstane-3alpha,17beta-diol + 2 NADP+
show the reaction diagram
3alpha-androstanediol + NAD+
? + NADH
show the reaction diagram
AKR1C2 and AKR1C4 act as 3alpha-hydroxysteroid oxidase, AKR1C3 predominantly acts as 17beta-hydroxysteroid oxidase catalyzing the conversion of 3alpha-diol to androsterone, negligible activity with the 3beta-androstanediol
-
-
?
5alpha-dihydrotestosterone + NADPH + H+
5alpha-androstan-3alpha,17beta-diol + NADP+
show the reaction diagram
i.e. DHT, reductive 3alpha-HSD activity of AKR1C1 yielding the 3alpha,17-diol, low activity
-
-
?
5alpha-dihydrotestosterone + NADPH + H+
5alpha-androstan-3beta,17beta-diol + NADP+
show the reaction diagram
i.e. DHT, reductive 3beta-HSD activity of AKR1C1 yielding the 3beta,17-diol, preferred reaction
-
-
?
progesterone + NADPH
pregn-4-ene-20alpha-ol-3-one + NADP+
show the reaction diagram
i.e. pregn-4-ene-3,20-dione
-
-
?
[7alpha,17alpha]-17-hydroxy-7-methyl-19-norpregn-5(10)-en-20-yn-3-one + NADPH
[7alpha,17alpha]-17-hydroxy-7-methyl-19-norpregn-5(10)-en-20-yn-3-ol + NADP+
show the reaction diagram
i.e. tibolone, a synthetic hormone
-
-
?
(4-methyl)zymosterone + NADPH + H+
(4-methyl)zymosterol + NADP+
show the reaction diagram
16alpha-hydroxy-dehydroepiandrosterone + NADH + H+
?
show the reaction diagram
-
-
-
-
?
16beta-hydroxy-dehydroepiandrosterone + NADH + H+
?
show the reaction diagram
-
-
-
-
?
17alpha-hydroxypregnenolone + NADH + H+
17alpha-hydroxyprogesterone + NAD+
show the reaction diagram
-
-
-
-
?
3alpha-androstanediol + NAD+
5alpha-dihydrotestosterone + NADH
show the reaction diagram
-
-
-
-
?
5-androstene-3,17-dione + NAD+
dehydroepiandrosterone + NADH + H+
show the reaction diagram
-
-
-
-
?
5alpha-androstane-3,17-dione + NADPH
epi-androsterone + NADP+
show the reaction diagram
5alpha-dihydrotestosterone + NADPH + H+
5alpha-androstan-3alpha,17beta-diol + NADP+
show the reaction diagram
dehydroepiandrosterone + NAD+
androstenedione + NADH + H+
show the reaction diagram
-
-
-
?
dehydroepiandrosterone + NADH + H+
5-androstene-3,17-dione + NAD+
show the reaction diagram
-
-
-
-
?
dihydrotestosterone + NADPH + H+
5alpha-androstane-3beta,17beta-diol + NADP+
show the reaction diagram
pregnenolone + NADH + H+
progesterone + NAD+
show the reaction diagram
-
-
-
-
?
progesterone + NADPH + H+
4-pregnen-3beta-ol-20-one + NADP+
show the reaction diagram
zymosterone + NADPH
zymosterol + NADP+
show the reaction diagram
-
-
-
-
?
[7alpha,17alpha]-17-hydroxy-7-methyl-19-norpregn-5(10)-en-20-yn-3-one + NADPH
[7alpha,17alpha]-17-hydroxy-7-methyl-19-norpregn-5(10)-en-20-yn-3-ol + NADP+
show the reaction diagram
-
i.e. tibolone, a synthetic hormone
reaction product determination and analysis
-
?
additional information
?
-
NATURAL SUBSTRATE
NATURAL PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
2 17beta-hydroxy-5alpha-androstan-3-one + 2 NADPH + 2 H+
5alpha-androstane-3beta,17beta-diol + 5alpha-androstane-3alpha,17beta-diol + 2 NADP+
show the reaction diagram
AKR1cs are a source of beta-tetrahydrosteroids. This is of physiological significance because the formation of 3beta-diol in contrast to 3alpha-diol is virtually irreversible, the 3beta-diol is a pro-apoptotic ligand for estrogen receptor beta, and 3beta-tetrahydrosteroids act as gamma-aminobutyric acid type A receptor antagonists
-
-
?
(4-methyl)zymosterone + NADPH + H+
(4-methyl)zymosterol + NADP+
show the reaction diagram
cholesterol pathway
-
-
?
5alpha-dihydrotestosterone + NADPH + H+
5alpha-androstan-3alpha,17beta-diol + NADP+
show the reaction diagram
-
in prostate cells AKR1C2 acts as a 3-ketosteroid reductase to eliminate 5alpha-dihydrotestosterone and prevents activation of androgen receptor. AKR1C2 does not act as an oxidase due to either potent product inhibition by NADPH or because it cannot surmount the oxidative 17beta-hydroxysteroid dehydrogenase present. AKR1C2 is not a source of 5alpha-dihydrotestosterone in PC-3 cells
-
-
?
dihydrotestosterone + NADPH + H+
5alpha-androstane-3beta,17beta-diol + NADP+
show the reaction diagram
steroid hormone pathway
-
-
?
progesterone + NADPH + H+
4-pregnen-3beta-ol-20-one + NADP+
show the reaction diagram
steroid hormone pathway
-
-
?
additional information
?
-
COFACTOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
NADPH
NAD+
-
-
NADH
-
-
INHIBITOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
Flufenamic acid
inhibits 3alpha-diol versus 3beta-diol formation
NADPH
potent inhibition of hydroxysteroid oxidase activity by low micromolar concentrations
16-cyano-17-keto-trilostane
selective inhibitor
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2,16-dicyano-4,5-epoxy-androstane-3,17-dione
competitively inhibits 3beta-HSD1
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5beta-cholanic acid-3alpha,7alpha-diol
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Flufenamic acid
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in vitro and in vivo inhibition of AKR1C1
NADPH
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the NAD+:NADPH ratio in cell will determinewhether AKR1C2 makes 5alpha-dihydrotestosterone
trilostane
additional information
-
KM VALUE [mM]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
0.0043
17beta-hydroxy-5alpha-androstan-3-one
pH 7.0, 37°C, spectrophotometric analysis, formation of 3beta-androstanediol or 3alpha-androstanediol
0.0037 - 0.0124
dehydroepiandrosterone
0.0205 - 0.0341
NAD+
TURNOVER NUMBER [1/s]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
0.003 - 0.052
17beta-hydroxy-5alpha-androstan-3-one
0.055 - 0.13
dehydroepiandrosterone
0.04 - 0.1
NAD+
kcat/KM VALUE [1/mMs-1]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
10.48 - 14.86
dehydroepiandrosterone
1.64 - 4.88
NAD+
Ki VALUE [mM]
INHIBITOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
0.0047 - 0.0415
2,16-dicyano-4,5-epoxy-androstane-3,17-dione
-
0.0001 - 0.00256
trilostane
SPECIFIC ACTIVITY [µmol/min/mg]
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
0.0039
with substrate 5alpha-dihydrotestosterone, formation of the 3alpha-hydroxysteroid
0.0161
with substrate 5alpha-dihydrotestosterone, formation of the 3beta-hydroxysteroid
0.0312
with substrate tibolone
0.0432
with substrate progesterone
pH OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
7.4
-
assay at
TEMPERATURE OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
27
-
assay at
37
-
assay at
ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
-
UniProt
Manually annotated by BRENDA team
SOURCE TISSUE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
SOURCE
HepG2 cells which lack 3-ketohydroxysteroid reductase/DELTA5-4ketosteroid isomerase mRNA expression, but express AKR1C1-AKR1C3 are able to convert 17beta-hydroxy-5alpha-androstan-3-one to 3beta-androstanediol and 3alpha-androstanediol
Manually annotated by BRENDA team
-
primary, time-dependent reduction of tibolone into 3beta- and 3alpha-hydroxytibolone was observed again in a 4:1 ratio
Manually annotated by BRENDA team
-
AKR1C2 is not a source of 5alpha-dihydrotestosterone in PC-3 cells
Manually annotated by BRENDA team
-
in primary cultures of epithelial cells, high levels of AKR1C2 transcripts are detected in prostate cancer, but not in cell from normal prostate. In prostate cells AKR1C2 acts as a 3-ketosteroid reductase to eliminate 5alpha-dihydrotestosterone and prevents activation of androgen receptor
Manually annotated by BRENDA team
-
in primary cultures of epithelial cells, high levels of AKR1C2 transcripts are detected in prostate cancer, but not in cell from normal prostate
Manually annotated by BRENDA team
additional information
-
isozymes 3beta-HSD1 and 3beta-HSD2 are encoded by two distinct genes which are expressed in a tissue-specific pattern
Manually annotated by BRENDA team
LOCALIZATION
ORGANISM
UNIPROT
COMMENTARY hide
GeneOntology No.
LITERATURE
SOURCE
additional information
-
3-keto reductase activity in both microsomal fractions and intact cells
-
Manually annotated by BRENDA team
GENERAL INFORMATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
drug target
evolution
-
human 3beta-hydroxysteroid dehydrogenase is a member of the short-chain dehydrogenase/reductase (SDR) family of enzymes, all of which contain the Rossmann-fold domain with a beta-alpha-beta-alpha-beta-alpha-beta-alpha-beta folding pattern that binds cofactor and substrate
malfunction
interleukin-6 treatment partially reduces the cytotoxicity augmented by the HSD3B1 knockdown
metabolism
physiological function
UNIPROT
ENTRY NAME
ORGANISM
NO. OF AA
NO. OF TRANSM. HELICES
MOLECULAR WEIGHT[Da]
SOURCE
SEQUENCE
LOCALIZATION PREDICTION?
AK1C1_HUMAN
323
0
36788
Swiss-Prot
-
PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
D61N
-
site-directed mutagenesis, mutation in isozyme 3beta-HSD1
D61V
-
site-directed mutagenesis, mutation in isozyme 3beta-HSD1
DELTA214-341
-
inactive mutant enzyme
E192A
-
site-directed mutagenesis, mutation in isozyme 3beta-HSD1
P195R
-
site-directed mutagenesis, mutation in isozyme 3beta-HSD2
R195P
S194G
trilostane inhibits chimeric S194G-1 mutant (Ki: 0.00067 mM) with a noncompetitive mode compared to its 6.7fold higher affinity, competitive inhibition of 3beta-HSD1. 2,16-Dicyano-4,5-epoxy-androstane-3,17-dione inhibits S194G-1 with a 6.3fold higher Ki (0.0295 mM) than measured for 3beta-HSD1 (Ki: 0.0047 mM) but with the same competitive mode for both enzyme species
T8A
-
site-directed mutagenesis, mutation in isozyme 3beta-HSD1
additional information
PURIFICATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
recombinant wild-type and mutant enzymes from Sf9 insect cells by ultracentrifugation
-
CLONED (Commentary)
ORGANISM
UNIPROT
LITERATURE
overexpression in Escherichia coli
3-ketosteroid reductase activity of the human 3(alpha-beta)-hydroxysteroid epimerase, stable expression
-
expression of HSD17B7 and truncated HSD17B7 (shortened by 127 amino acids at the C terminus) as glutathione-S-transferase fusion protein in Escherichia coli. Erg27p-deficient yeast strain complements the 3-ketosteroid reductase deficiency of the cells and restores growth on sterol-deficient medium
-
expression of wild-type and mutant enzymes in Spodoptera frugiperda Sf9 cells using the baculovirus transfection system
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overexpression in Escherichia coli BL21 (DE3) Codon Plus RP cells
quantitative expression analysis of AKR1C isozymes
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the cDNA that encodes the mutant 3beta-HSD1 enzymes S194G-1 and R195P-1 are generated via double-stranded, PCR-based mutagenesis and inserted into baculovirus. The recombinant baculovirus system successfully expresses the mutant S194G-1 and R195P-1 enzyme proteins in Sf9 cells with the wild-type 3beta-HSD1 as the control
EXPRESSION
ORGANISM
UNIPROT
LITERATURE
expression is elevated in ER+ postmenopausal breast cancer and progressive breast cancer by TNM stage (local lymph node invasion and distant metastases)
APPLICATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
medicine
-
the selective inhibition of human 3beta-HSD1 in breast tumors represents a potential treatment for hormone-sensitive breast cancer
REF.
AUTHORS
TITLE
JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
Huang, X.F.; Luu-The, V.
Gene structure, chromosomal localization and analysis of 3-ketosteroid reductase activity of the human 3(alpha->beta)-hydroxysteroid epimerase
Biochim. Biophys. Acta
1520
124-130
2001
Homo sapiens
Manually annotated by BRENDA team
Rizner, T.L.; Lin, H.K.; Peehl, D.M.; Steckelbroeck, S.; Bauman, D.R.; Penning, T.M.
Human type 3 3alpha-hydroxysteroid dehydrogenase (aldo-keto reductase 1C2) and androgen metabolism in prostate cells
Endocrinology
144
2922-2932
2003
Homo sapiens
Manually annotated by BRENDA team
Steckelbroeck, S.; Jin, Y.; Gopishetty, S.; Oyesanmi, B.; Penning, T.M.
Human cytosolic 3alpha-hydroxysteroid dehydrogenases of the aldo-keto reductase superfamily display significant 3beta-hydroxysteroid dehydrogenase activity: implications for steroid hormone metabolism and action
J. Biol. Chem.
279
10784-10795
2004
Homo sapiens (Q04828), Homo sapiens
Manually annotated by BRENDA team
Marijanovic, Z.; Laubner, D.; Moeller, G.; Gege, C.; Husen, B.; Adamski, J.; Breitling, R.
Closing the gap: Identification of human 3-ketosteroid reductase, the last unknown enzyme of mammalian cholesterol biosynthesis
Mol. Endocrinol.
17
1715-1725
2003
Homo sapiens, Mus musculus
Manually annotated by BRENDA team
Steckelbroeck, S.; Oyesanmi, B.; Jin, Y.; Lee, S.H.; Kloosterboer, H.J.; Penning, T.M.
Tibolone metabolism in human liver is catalyzed by 3alpha/3beta-hydroxysteroid dehydrogenase activities of the four isoforms of the aldo-keto reductase (AKR)1C subfamily
J. Pharmacol. Exp. Ther.
316
1300-1309
2006
Homo sapiens
Manually annotated by BRENDA team
Jin, Y.; Penning, T.M.
Molecular docking simulations of steroid substrates into human cytosolic hydroxysteroid dehydrogenases (AKR1C1 and AKR1C2): insights into positional and stereochemical preferences
Steroids
71
380-391
2006
Homo sapiens (Q04828), Homo sapiens
Manually annotated by BRENDA team
Taramino, S.; Teske, B.; Oliaro-Bosso, S.; Bard, M.; Balliano, G.
Divergent interactions involving the oxidosqualene cyclase and the steroid-3-ketoreductase in the sterol biosynthetic pathway of mammals and yeasts
Biochim. Biophys. Acta
1801
1232-1237
2010
Homo sapiens (P56937), Homo sapiens, Mus musculus (O88736), Mus musculus
Manually annotated by BRENDA team
Thomas, J.L.; Mack, V.L.; Sun, J.; Terrell, J.R.; Bucholtz, K.M.
The functions of key residues in the inhibitor, substrate and cofactor sites of human 3beta-hydroxysteroid dehydrogenase type 1 are validated by mutagenesis
J. Steroid Biochem. Mol. Biol.
120
192-199
2010
Homo sapiens
Manually annotated by BRENDA team
Ferrante, T.; Adinolfi, S.; DArrigo, G.; Poirier, D.; Daga, M.; Lolli, M.L.; Balliano, G.; Spyrakis, F.; Oliaro-Bosso, S.
Multiple catalytic activities of human 17beta-hydroxysteroid dehydrogenase type 7 respond differently to inhibitors
Biochimie
170
106-117
2020
Homo sapiens (P56937), Homo sapiens
Manually annotated by BRENDA team
Wang, X.Q.; Aka, J.A.; Li, T.; Xu, D.; Doillon, C.J.; Lin, S.X.
Inhibition of 17beta-hydroxysteroid dehydrogenase type 7 modulates breast cancer protein profile and enhances apoptosis by down-regulating GRP78
J. Steroid Biochem. Mol. Biol.
172
188-197
2017
Homo sapiens (P56937)
Manually annotated by BRENDA team
Pham, J.H.; Will, C.M.; Mack, V.L.; Halbert, M.; Conner, E.A.; Bucholtz, K.M.; Thomas, J.L.
Structure-function relationships for the selective inhibition of human 3beta-hydroxysteroid dehydrogenase type 1 by a novel androgen analog
J. Steroid Biochem. Mol. Biol.
174
257-264
2017
Homo sapiens (P14060)
Manually annotated by BRENDA team
Chang, Y.C.; Lin, C.H.; Lin, J.C.; Cheng, S.P.; Chen, S.N.; Liu, C.L.
Inhibition of 3beta-hydroxysteroid dehydrogenase type 1 suppresses interleukin-6 in breast cancer
J. Surg. Res.
241
8-14
2019
Homo sapiens (P14060)
Manually annotated by BRENDA team