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17-beta-hydroxysteroid dehydrogenase (NADP+) activity

Definition

Target type: molecularfunction

Catalysis of the reaction: a 17-beta-hydroxysteroid + NADP+ = a 17-oxosteroid + NADPH + H+. [GOC:kad, PMID:17074428]

17-beta-hydroxysteroid dehydrogenase (NADP+) activity is a crucial enzyme involved in the metabolism of steroid hormones. It catalyzes the reversible oxidation-reduction reaction of the 17-beta-hydroxy group of steroid substrates, specifically using NADP+ as a cofactor. This enzymatic activity plays a significant role in the biosynthesis and inactivation of various steroid hormones, including androgens, estrogens, and glucocorticoids. The enzyme's function is essential for regulating the levels of these hormones in the body, which in turn influences a wide range of physiological processes. The reaction proceeds via the transfer of a hydride ion from the 17-beta-hydroxyl group of the substrate to the NADP+ molecule. The NADP+ is reduced to NADPH, while the steroid substrate is oxidized. The reverse reaction, where NADPH is oxidized to NADP+ and the steroid substrate is reduced, is also catalyzed by 17-beta-hydroxysteroid dehydrogenase (NADP+). The direction of the reaction depends on the relative concentrations of the substrates and products, as well as the cellular conditions. This dynamic equilibrium ensures that the appropriate levels of active steroid hormones are maintained in the body. In summary, 17-beta-hydroxysteroid dehydrogenase (NADP+) activity is a critical enzyme in steroid hormone metabolism, responsible for the conversion of inactive precursors to active hormones and vice versa. Its function is essential for maintaining hormonal balance and regulating physiological processes throughout the body.'
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Proteins (2)

ProteinDefinitionTaxonomy
Testosterone 17-beta-dehydrogenase 3A 17-beta-hydroxysteroid dehydrogenase type 3 that is encoded in the genome of human. [PRO:DNx, UniProtKB:P37058]Homo sapiens (human)
17-beta-hydroxysteroid dehydrogenase type 1A 17-beta-hydroxysteroid dehydrogenase type 1 that is encoded in the genome of human. [PRO:DNx, UniProtKB:P14061]Homo sapiens (human)

Compounds (34)

CompoundDefinitionClassesRoles
bicalutamidebicalutamide : A racemate comprising of equal amounts of (R)-bicalutamide and (S)-bicalutamide. It is an oral non-steroidal antiandrogen used in the treatment of prostate cancer and hirsutism.

bicalutamide: approved for treatment of advanced prostate cancer

N-[4-cyano-3-(trifluoromethyl)phenyl]-3-[(4-fluorophenyl)sulfonyl]-2-hydroxy-2-methylpropanamide : A member of the class of (trifluoromethyl)benzenes that is 4-amino-2-(trifluoromethyl)benzonitrile in which one of the amino hydrogens is substituted by a 3-[(4-fluorophenyl)sulfonyl]-2-hydroxy-2-methylpropanoyl group.
(trifluoromethyl)benzenes;
monocarboxylic acid amide;
monofluorobenzenes;
nitrile;
sulfone;
tertiary alcohol
endosulfanendosulfan : A cyclic sulfite ester that is 1,5,5a,6,9,9a-hexahydro-6,9-methano-2,4,3-benzodioxathiepine 3-oxide substituted by chloro groups at positions 6, 7, 8, 9, 10 and 10.

Endosulfan: A polychlorinated compound used for controlling a variety of insects. It is practically water-insoluble, but readily adheres to clay particles and persists in soil and water for several years. Its mode of action involves repetitive nerve-discharges positively correlated to increase in temperature. This compound is extremely toxic to most fish. (From Comp Biochem Physiol (C) 1993 Jul;105(3):347-61)
cyclic sulfite ester;
cyclodiene organochlorine insecticide
acaricide;
agrochemical;
GABA-gated chloride channel antagonist;
persistent organic pollutant
masoprocolnordihydroguaretic acid: antioxidant compound found in the creosote bush (Larrea tridentata)catechols;
lignan;
tetrol
antioxidant;
ferroptosis inhibitor;
geroprotector;
plant metabolite
estroneHydroxyestrones: Estrone derivatives substituted with one or more hydroxyl groups in any position. They are important metabolites of estrone and other estrogens.17-oxo steroid;
3-hydroxy steroid;
phenolic steroid;
phenols
antineoplastic agent;
bone density conservation agent;
estrogen;
human metabolite;
mouse metabolite
etiocholanolone3alpha-hydroxy-5beta-androstan-17-one : An androstanoid that is 5beta-androstane substituted by an alpha-hydroxy group at position 3 and an oxo group at position 17. It is a metabolite of testosterone in mammals.

Etiocholanolone: The 5-beta-reduced isomer of ANDROSTERONE. Etiocholanolone is a major metabolite of TESTOSTERONE and ANDROSTENEDIONE in many mammalian species including humans. It is excreted in the URINE.
17-oxo steroid;
3alpha-hydroxy steroid;
androstanoid
human metabolite;
mouse metabolite
androstenedioneandrost-4-ene-3,17-dione : A 3-oxo Delta(4)-steroid that is androst-4-ene substituted by oxo groups at positions 3 and 17. It is a steroid hormone synthesized in the adrenal glands and gonads.

Androstenedione: A delta-4 C19 steroid that is produced not only in the TESTIS, but also in the OVARY and the ADRENAL CORTEX. Depending on the tissue type, androstenedione can serve as a precursor to TESTOSTERONE as well as ESTRONE and ESTRADIOL.
17-oxo steroid;
3-oxo-Delta(4) steroid;
androstanoid
androgen;
Daphnia magna metabolite;
human metabolite;
mouse metabolite
4-hydroxypropiophenoneacetophenones
4-hydroxyacetophenone4-hydroxyacetophenone: promotes secretion of bile & bile salts, which promotes griseofulvin absorption in the duodenum

4'-hydroxyacetophenone : A monohydroxyacetophenone carrying a hydroxy substituent at position 4'.
monohydroxyacetophenonefungal metabolite;
mouse metabolite;
plant metabolite
phenylbenzoquinonephenylbenzoquinone: RN given refers to parent cpd
dihydrotestosterone17beta-hydroxy-5alpha-androstan-3-one : A 17beta-hydroxy steroid that is testosterone in which the 4,5 double bond has been reduced to a single bond with alpha-configuration at position 5.

17beta-hydroxyandrostan-3-one : A 17beta-hydroxy steroid that is testosterone in which the 4-5 double bond has been reduced to a single bond with unspecified configuration at position 5.

Dihydrotestosterone: A potent androgenic metabolite of TESTOSTERONE. It is produced by the action of the enzyme 3-OXO-5-ALPHA-STEROID 4-DEHYDROGENASE.
17beta-hydroxy steroid;
17beta-hydroxyandrostan-3-one;
3-oxo-5alpha-steroid
androgen;
Daphnia magna metabolite;
human metabolite;
mouse metabolite
phenylhydroquinonephenylhydroquinone: major metabolite of o-phenylphenol; cleaves DNA; structure given in first source
6-hydroxyflavone6-hydroxyflavone: antioxidant; structure in first sourcehydroxyflavonoid
estrone 3-methyl etherestrone 3-methyl ether: RN given refers to cpd with unspecified isomeric designation; structure
acetylglycyrrhetinic acidacetylglycyrrhetinic acid: RN given refers to (3beta,20beta)-isomertriterpenoid
naringenin(S)-naringenin : The (S)-enantiomer of naringenin.(2S)-flavan-4-one;
naringenin
expectorant;
plant metabolite
2-methoxyestrone2-methoxyestrone : A 17-oxo steroid that is estrone in which the hydrogen at position 2 has been replaced by a methoxy group.17-oxo steroid;
3-hydroxy steroid;
alicyclic ketone;
aromatic ether;
phenolic steroid;
phenols
human metabolite;
mouse metabolite
isoliquiritigeninchalconesantineoplastic agent;
biological pigment;
EC 1.14.18.1 (tyrosinase) inhibitor;
GABA modulator;
geroprotector;
metabolite;
NMDA receptor antagonist
zuclomipheneZuclomiphene: The cis or (Z)-isomer of clomiphene.stilbenoid
3-(1-adamantyl)-6,7,8,9-tetrahydro-5h-(1,2,4)triazolo(4,3-a)azepine
biochanin a4'-methoxyisoflavones;
7-hydroxyisoflavones
antineoplastic agent;
EC 3.5.1.99 (fatty acid amide hydrolase) inhibitor;
phytoestrogen;
plant metabolite;
tyrosine kinase inhibitor
apigeninChamomile: Common name for several daisy-like plants (MATRICARIA; TRIPLEUROSPERMUM; ANTHEMIS; CHAMAEMELUM) native to Europe and Western Asia, now naturalized in the United States and Australia.trihydroxyflavoneantineoplastic agent;
metabolite
hymecromoneHymecromone: A coumarin derivative possessing properties as a spasmolytic, choleretic and light-protective agent. It is also used in ANALYTICAL CHEMISTRY TECHNIQUES for the determination of NITRIC ACID.hydroxycoumarinantineoplastic agent;
hyaluronic acid synthesis inhibitor
kaempferol7-hydroxyflavonol;
flavonols;
tetrahydroxyflavone
antibacterial agent;
geroprotector;
human blood serum metabolite;
human urinary metabolite;
human xenobiotic metabolite;
plant metabolite
genistein7-hydroxyisoflavonesantineoplastic agent;
EC 5.99.1.3 [DNA topoisomerase (ATP-hydrolysing)] inhibitor;
geroprotector;
human urinary metabolite;
phytoestrogen;
plant metabolite;
tyrosine kinase inhibitor
baicaleintrihydroxyflavoneangiogenesis inhibitor;
anti-inflammatory agent;
antibacterial agent;
anticoronaviral agent;
antifungal agent;
antineoplastic agent;
antioxidant;
apoptosis inducer;
EC 1.13.11.31 (arachidonate 12-lipoxygenase) inhibitor;
EC 1.13.11.33 (arachidonate 15-lipoxygenase) inhibitor;
EC 3.4.21.26 (prolyl oligopeptidase) inhibitor;
EC 3.4.22.69 (SARS coronavirus main proteinase) inhibitor;
EC 4.1.1.17 (ornithine decarboxylase) inhibitor;
ferroptosis inhibitor;
geroprotector;
hormone antagonist;
plant metabolite;
prostaglandin antagonist;
radical scavenger
fisetin3'-hydroxyflavonoid;
7-hydroxyflavonol;
tetrahydroxyflavone
anti-inflammatory agent;
antioxidant;
EC 5.99.1.3 [DNA topoisomerase (ATP-hydrolysing)] inhibitor;
geroprotector;
metabolite;
plant metabolite
myricetin7-hydroxyflavonol;
hexahydroxyflavone
antineoplastic agent;
antioxidant;
cyclooxygenase 1 inhibitor;
food component;
geroprotector;
hypoglycemic agent;
plant metabolite
7-hydroxyflavone7-hydroxyflavone : A hydroxyflavonoid in which the flavone nucleus is substituted at position 7 by a hydroxy group.hydroxyflavonoid
2'-hydroxygenistein2'-hydroxygenistein : A hydroxyisoflavone that is genistein substituted by an additional hydroxy group at position 2'. It has been isolated from Crotalaria lachnophora.hydroxyisoflavoneplant metabolite
chlorferronchlorferron: metabolite of coumaphosorganochlorine compound
7-hydroxy-4-trifluoromethylcoumarin7-hydroxy-4-trifluoromethylcoumarin: structure given in first source
bvt2733
6-(3-hydroxyphenyl)-2-naphthol6-(3-hydroxyphenyl)-2-naphthol: has inhibitory effects on tyrosinase activity and melanin synthesis; structure in first source
d-homoestroneD-homoestrone: structure