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Information on EC 1.14.14.32 - 17alpha-hydroxyprogesterone deacetylase and Organism(s) Homo sapiens and UniProt Accession P05093

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IUBMB Comments
A microsomal cytochrome P-450 (heme-thiolate) protein that catalyses two independent reactions at the same active site - the 17-hydroxylation of pregnenolone and progesterone, which is part of glucocorticoid hormones biosynthesis (EC 1.14.14.19), and the conversion of the 17-hydroxylated products via a 17,20-lyase reaction to form androstenedione and 3beta-hydroxyandrost-5-en-17-one, leading to sex hormone biosynthesis. The activity of this reaction is dependent on the allosteric interaction of the enzyme with cytochrome b5 without any transfer of electrons from the cytochrome [2,4]. The enzymes from different organisms differ in their substrate specificity. While the enzymes from pig, hamster, and rat accept both 17alpha-hydroxyprogesterone and 17alpha-hydroxypregnenolone, the enzymes from human, bovine, sheep, goat, and bison do not accept the former, and the enzyme from guinea pig does not accept the latter .
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Homo sapiens
UNIPROT: P05093
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Word Map
The taxonomic range for the selected organisms is: Homo sapiens
The enzyme appears in selected viruses and cellular organisms
Synonyms
cyp17, cyp17a1, p450c17, 17alpha-hydroxylase, cytochrome p450c17, 17,20 lyase, c17,20-lyase, 17alpha-hydroxylase/17,20-lyase, cytochrome p450 17a1, p450 17a1, more
SYNONYM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
17alpha-hydroxylase
-
CYP17A1
cytochrome P450 17
-
cytochrome P450 17A1
-
cytochrome P450c17
-
P450 17A1
-
steroid 17alphahydroxylase/17,20-lyase
-
17,20 lyase
-
-
-
-
17-20 lyase
-
-
17-alpha-hydroxylase/C17-20 lyase
-
-
17-hydroxylase/C17,20-lyase
-
-
17alpha-hydroxylase/17,20 lyase
-
-
17alpha-hydroxylase/17,20-lyase
-
-
17alpha-hydroxyprogesterone aldolase
-
-
17alpha-hydroxyprogesterone aldolase/17,20-lyase
-
-
17alpha-lyase
-
-
Adrenal 17,20-lyase
-
-
-
-
aldolase, 17alpha-hydroxyprogesterone
-
-
-
-
C-17,20 lyase
-
-
-
-
C-17/C-20 lyase
-
-
-
-
C17(20) lyase
-
-
-
-
C17,20 lyase
-
-
CYP17
cytochrome P450c17
-
-
Steroid C17(20) lyase
-
-
-
-
REACTION TYPE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
deacylation
-
-
hydroxylation
-
17alpha-hydroxylation
C-C bond cleavage
-
C17-C20 bond cleavage
PATHWAY SOURCE
PATHWAYS
-
-, -, -
SYSTEMATIC NAME
IUBMB Comments
17alpha-hydroxyprogesterone,NADPH—hemoprotein reductase:oxygen oxidoreductase (17alpha-hydroxylating, acetate-releasing)
A microsomal cytochrome P-450 (heme-thiolate) protein that catalyses two independent reactions at the same active site - the 17-hydroxylation of pregnenolone and progesterone, which is part of glucocorticoid hormones biosynthesis (EC 1.14.14.19), and the conversion of the 17-hydroxylated products via a 17,20-lyase reaction to form androstenedione and 3beta-hydroxyandrost-5-en-17-one, leading to sex hormone biosynthesis. The activity of this reaction is dependent on the allosteric interaction of the enzyme with cytochrome b5 without any transfer of electrons from the cytochrome [2,4]. The enzymes from different organisms differ in their substrate specificity. While the enzymes from pig, hamster, and rat accept both 17alpha-hydroxyprogesterone and 17alpha-hydroxypregnenolone, the enzymes from human, bovine, sheep, goat, and bison do not accept the former, and the enzyme from guinea pig does not accept the latter [1].
CAS REGISTRY NUMBER
COMMENTARY hide
62213-24-5
-
SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
17-hydroxy-5alpha-pregnan-3alpha-ol-20-one + [reduced NADPH-hemoprotein reductase] + O2
androsterone + [oxidized NADPH-hemoprotein reductase] + H2O
show the reaction diagram
-
-
-
?
17alpha-hydroxy-5alpha-dihydroprogesterone + [reduced NADPH-hemoprotein reductase] + O2
5alpha-androstanedione + acetate + [oxidized NADPH-hemoprotein reductase] + H2O
show the reaction diagram
-
-
-
?
17alpha-hydroxypregnenolone + AH2 + O2
dehydroepiandrosterone + acetate + A + H2O
show the reaction diagram
-
-
-
?
17alpha-hydroxypregnenolone + [reduced NADPH-hemoprotein reductase] + O2
3beta-hydroxyandrost-5-en-17-one + acetate + [oxidized NADPH-hemoprotein reductase] + H2O
show the reaction diagram
-
-
-
?
17alpha-hydroxypregnenolone + [reduced NADPH-hemoprotein reductase] + O2
dehydroepiandrosterone + [oxidized NADPH-hemoprotein reductase] + acetate + H2O
show the reaction diagram
-
-
-
?
17alpha-hydroxyprogesterone + [reduced NADPH-hemoprotein reductase] + O2
androstenedione + acetate + [oxidized NADPH-hemoprotein reductase] + H2O
show the reaction diagram
5alpha-dihydroprogesterone + [reduced NADPH-hemoprotein reductase] + O2
17alpha-hydroxy-5alpha-dihydroprogesterone + [oxidized NADPH-hemoprotein reductase] + H2O
show the reaction diagram
-
-
-
?
5alpha-pregnan-3alpha-ol-20-one + [reduced NADPH-hemoprotein reductase] + O2
17-hydroxy-5alpha-pregnan-3alpha-ol-20-one + [oxidized NADPH-hemoprotein reductase] + H2O
show the reaction diagram
-
-
-
?
7,12-dimethylbenz[a]anthracene + AH2 + O2
?
show the reaction diagram
substrate for CYP17A1
-
-
?
7-dehydro-17alpha-hydroxypregnenolone + AH2 + O2
7-dehydro-dehydroepiandrosterone + acetate + A + H2O
show the reaction diagram
7-dehydro-pregnenolone + AH2 + O2
7-dehydro-17alpha-hydroxy-pregnenolone + A + H2O
show the reaction diagram
-
-
-
?
7-dehydro-pregnenolone + AH2 + O2
7-dehydro-17alpha-hydroxypregnenolone + A + H2O
show the reaction diagram
-
-
-
?
aflatoxin B1 + AH2 + O2
aflatoxin B1epoxide + A + H2O
show the reaction diagram
substrate for CYP17A1
-
-
?
allopregnanolone + [reduced NADPH-hemoprotein reductase] + O2
androstenedione + acetate + [oxidized NADPH-hemoprotein reductase] + H2O
show the reaction diagram
-
-
-
?
pregnenolone + AH2 + O2
17alpha-hydroxypregnenolone + A + H2O
show the reaction diagram
-
-
-
?
pregnenolone + [reduced NADPH-hemoprotein reductase] + 2 O2
3beta-hydroxyandrost-5-en-17-one + acetate + [oxidized NADPH-hemoprotein reductase] + 2 H2O
show the reaction diagram
-
-
-
?
pregnenolone + [reduced NADPH-hemoprotein reductase] + O2
17alpha-hydroxypregnenolone + [oxidized NADPH-hemoprotein reductase] + H2O
show the reaction diagram
progesterone + AH2 + O2
17alpha-hydroxyprogesterone + A + H2O
show the reaction diagram
-
-
-
?
progesterone + reduced acceptor + O2
17alpha-hydroxyprogesterone + acceptor + H2O
show the reaction diagram
-
-
-
?
progesterone + [reduced NADPH-hemoprotein reductase] + O2
16alpha-hydroxyprogesterone + [oxidized NADPH-hemoprotein reductase] + H2O
show the reaction diagram
minor product
-
-
?
progesterone + [reduced NADPH-hemoprotein reductase] + O2
17alpha-hydroxyprogesterone + [oxidized NADPH-hemoprotein reductase] + H2O
show the reaction diagram
17alpha-Hydroxypregnenolone
Dehydroepiandrosterone + acetaldehyde
show the reaction diagram
17alpha-hydroxypregnenolone + ? + cytochrome b5
dehydroepiandrosterone + ?
show the reaction diagram
-
-
-
-
?
17alpha-hydroxypregnenolone + AH2 + O2
?
show the reaction diagram
-
-
-
-
?
17alpha-hydroxyprogesterone + AH2 + O2
dehydroepiandrosterone + androstenedione + A + H2O
show the reaction diagram
-
-
-
-
?
17alpha-hydroxyprogesterone + [reduced NADPH-hemoprotein reductase] + O2
androstenedione + acetate + [oxidized NADPH-hemoprotein reductase] + H2O
show the reaction diagram
5alpha-pregnan-17alpha-ol-3,20-dione + ?
androstanedione
show the reaction diagram
-
-
very little product formation
-
?
5alpha-pregnan-3alpha,17alpha-diol-20-one + ? + cytochrome b5
androsterone + ?
show the reaction diagram
-
better substrate than 17alpha-hydroxypregenolone
rapid reaction
-
?
7alpha-hydroxypregnenolone + [reduced NADPH-hemoprotein reductase] + O2
3beta-hydroxyandrost-5-en-17-one + acetate + [oxidized NADPH-hemoprotein reductase] + H2O
show the reaction diagram
-
17,20-lyase activity
-
-
?
pregnenolone + reduced acceptor + O2
17alpha-hydroxypregnenolone + oxidized acceptor + H2O
show the reaction diagram
-
i.e. pregn-5-en-3beta-ol-20-one
-
-
?
pregnenolone + [reduced NADPH-hemoprotein reductase] + O2
17alpha-hydroxypregnenolone + [oxidized NADPH-hemoprotein reductase] + H2O
show the reaction diagram
-
-
-
-
?
progesterone + AH2 + O2
17alpha-hydroxyprogesterone + A + H2O
show the reaction diagram
-
-
-
-
?
progesterone + [reduced NADPH-hemoprotein reductase] + O2
17alpha-hydroxyprogesterone + [oxidized NADPH-hemoprotein reductase] + H2O
show the reaction diagram
-
-
-
-
?
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
17-hydroxy-5alpha-pregnan-3alpha-ol-20-one + [reduced NADPH-hemoprotein reductase] + O2
androsterone + [oxidized NADPH-hemoprotein reductase] + H2O
show the reaction diagram
-
-
-
?
17alpha-hydroxy-5alpha-dihydroprogesterone + [reduced NADPH-hemoprotein reductase] + O2
5alpha-androstanedione + acetate + [oxidized NADPH-hemoprotein reductase] + H2O
show the reaction diagram
-
-
-
?
5alpha-dihydroprogesterone + [reduced NADPH-hemoprotein reductase] + O2
17alpha-hydroxy-5alpha-dihydroprogesterone + [oxidized NADPH-hemoprotein reductase] + H2O
show the reaction diagram
-
-
-
?
5alpha-pregnan-3alpha-ol-20-one + [reduced NADPH-hemoprotein reductase] + O2
17-hydroxy-5alpha-pregnan-3alpha-ol-20-one + [oxidized NADPH-hemoprotein reductase] + H2O
show the reaction diagram
-
-
-
?
7-dehydro-17alpha-hydroxypregnenolone + AH2 + O2
7-dehydro-dehydroepiandrosterone + acetate + A + H2O
show the reaction diagram
-
-
-
?
7-dehydro-pregnenolone + AH2 + O2
7-dehydro-17alpha-hydroxy-pregnenolone + A + H2O
show the reaction diagram
-
-
-
?
pregnenolone + [reduced NADPH-hemoprotein reductase] + O2
17alpha-hydroxypregnenolone + [oxidized NADPH-hemoprotein reductase] + H2O
show the reaction diagram
-
-
-
?
progesterone + AH2 + O2
17alpha-hydroxyprogesterone + A + H2O
show the reaction diagram
-
-
-
?
progesterone + [reduced NADPH-hemoprotein reductase] + O2
17alpha-hydroxyprogesterone + [oxidized NADPH-hemoprotein reductase] + H2O
show the reaction diagram
-
-
-
?
17alpha-Hydroxypregnenolone
Dehydroepiandrosterone + acetaldehyde
show the reaction diagram
-
17,20-lyase activity
-
-
?
17alpha-hydroxyprogesterone + [reduced NADPH-hemoprotein reductase] + O2
androstenedione + acetate + [oxidized NADPH-hemoprotein reductase] + H2O
show the reaction diagram
-
17,20-lyase activity
-
-
?
7alpha-hydroxypregnenolone + [reduced NADPH-hemoprotein reductase] + O2
3beta-hydroxyandrost-5-en-17-one + acetate + [oxidized NADPH-hemoprotein reductase] + H2O
show the reaction diagram
-
17,20-lyase activity
-
-
?
pregnenolone + reduced acceptor + O2
17alpha-hydroxypregnenolone + oxidized acceptor + H2O
show the reaction diagram
-
i.e. pregn-5-en-3beta-ol-20-one
-
-
?
pregnenolone + [reduced NADPH-hemoprotein reductase] + O2
17alpha-hydroxypregnenolone + [oxidized NADPH-hemoprotein reductase] + H2O
show the reaction diagram
-
-
-
-
?
progesterone + AH2 + O2
17alpha-hydroxyprogesterone + A + H2O
show the reaction diagram
-
-
-
-
?
progesterone + [reduced NADPH-hemoprotein reductase] + O2
17alpha-hydroxyprogesterone + [oxidized NADPH-hemoprotein reductase] + H2O
show the reaction diagram
-
-
-
-
?
additional information
?
-
COFACTOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
cytochrome b5
without effect on steroid 17alpha-hydroxylation, cytochrome b5 causes a 5-10fold stimulation of the 17,20-lyase reaction mediated by CYP17
-
cytochrome b5
-
heme
-
-
INHIBITOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
(S)-orteronel
three times more inhibitory toward the conversion of 17alpha-hydroxypregnenolone to dehydroepiandrosterone than toward the 17alpha-hydroxylation of pregnenolone. The (S)-enantiomer of orteronel is more inhibitory than the (R) enantiomer
abiraterone acetate
-
bitertanol
-
dioctyltin chloride
-
fluconazole
-
flusilazole
ketoconazole
Propiconazole
-
tebuconazole
highest affinity for human CYP17A1
triadimenol
-
17-(1H-1,2,3-triazol-1-yl)androsta-4,16-dien-3-one
-
VN/85-1
17-(1H-imidazole-1-yl)androsta-4,16-dien-3-one
-
VN/108-1
2'-[[(E)-3beta-hydroxyandrost-5-en-17-ylidene]methyl]-4',4'-dimethyl-4',5'-dihydro-1',3'-oxazole
-
-
2'-[[(E)-3beta-hydroxyandrost-5-en-17-ylidene]methyl]-4',5'-dihydro-1',3'-oxazole
-
-
2-fluoro-4-[5-(pyridin-4-yl)-5,6,7,8-tetrahydronaphthalen-2-yl]phenol
-
-
2-fluoro-4-[5-(pyridin-4-yl)-7,8-dihydronaphthalen-2-yl]phenol
-
-
3-[5-(4-fluorophenyl)-2,3-dihydro-1H-inden-1-yl]pyridine
-
-
3-[6-(4-fluorophenyl)-1H-inden-3-yl]pyridine
-
-
3beta-acetoxy-5alpha,6beta,17alpha,21-tetrabromo-pregnane-20-one
-
-
3beta-hydroxy-17-(1H-1,2,3-triazol-1-yl)androsta-5,16-diene
-
VN/87-1
3beta-hydroxy-17-(1H-benzimidazol-1-yl)androsta-5,16-diene
-
VN/124-1
3beta-hydroxy-17-(1H-benzimidazole-1-yl)androsta-5,16-diene
-
VN/124-1
3beta-hydroxy-17-(50-[30-methyl]-10,20,40-oxadiazolyl)androst-5,16-diene
-
compound displays in vitro cytotoxic activity against HeLa cells, MCF-7 cells, A-2780 cells and A-431 cells which are higher than or comparable to that of the reference cisplatin
4-(1H-imidazol-1-ylmethyl)-7-[(3-methylbenzyl)oxy]-2H-chromen-2-one
-
-
4-(1H-imidazol-1-ylmethyl)-7-[[3-(trifluoromethyl)benzyl]oxy]-2Hchromen-2-one
-
-
4-[5-(4-fluorophenyl)-2,3-dihydro-1H-inden-1-yl]pyridine
-
-
4-[5-(pyridin-4-yl)-5,6,7,8-tetrahydronaphthalen-2-yl]benzene-1,2-diol
-
-
4-[5-(pyridin-4-yl)-7,8-dihydronaphthalen-2-yl]benzene-1,2-diol
-
-
4-[6-(3,4-difluorophenyl)-1,2,3,4-tetrahydronaphthalen-1-yl]pyridine
-
-
4-[6-(3,4-difluorophenyl)-3,4-dihydronaphthalen-1-yl]pyridine
-
-
4-[6-(4-fluorophenyl)-1,2,3,4-tetrahydronaphthalen-1-yl]pyridine
-
-
4-[6-(4-fluorophenyl)-1H-inden-3-yl]pyridine
-
-
4-[6-(4-fluorophenyl)-3,4-dihydronaphthalen-1-yl]pyridine
-
-
4-[6-(4-methoxyphenyl)-1H-inden-3-yl]pyridine
-
-
5-(4-fluorophenyl)-1-(pyridin-3-yl)-2,3-dihydro-1H-inden-1-ol
-
-
6-(3,4-difluorophenyl)-1-(pyridin-3-yl)-1,2,3,4-tetrahydronaphthalen-1-ol
-
-
6-(3-fluoro-4-methoxyphenyl)-1-(pyridin-3-yl)-1,2,3,4-tetrahydronaphthalen-1-ol
-
-
7-[(3-chlorobenzyl)oxy]-4-(1H-imidazol-1-ylmethyl)-2H-chromen-2-one
-
-
7-[(3-fluorobenzyl)oxy]-4-(1H-imidazol-1-ylmethyl)-2H-chromen-2-one
-
-
abiraterone
cyclopregnenolone
-
i.e. 3alpha5-cyclo-6beta-methoxy-5alpha-pregnane-20-one
Insulin
-
acute and selective
-
ketoconazole
O-3beta-acetoxyandrost-5,16-diene-17-acyl-p-methoxybenzamidoxime
-
compound displays in vitro cytotoxic activity against HeLa cells, MCF-7 cells, A-2780 cells and A-431 cells which are higher than or comparable to that of the reference cisplatin
O-3beta-acetoxyandrost-5,16-diene-17-acylacetamidoxime
-
compound displays in vitro cytotoxic activity against HeLa cells, MCF-7 cells, A-2780 cells and A-431 cells which are higher than or comparable to that of the reference cisplatin
TOK-001
-
-
VT-464
-
selective suppression of androgen synthesis through CYP17 lyase inhibition
additional information
-
ACTIVATING COMPOUND
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
cytochrome b5
-
cytochrome b5
-
-
-
P450 oxidoreductase
-
-
-
PD98059
-
inhibitor of the MEK/ERK pathway. Treatment of cells with PD98059 (10 mM) at 24 and 48 h results in significant increases in the protein levels of CYP17. Production of androstenedione and estradiol significantly increases after treatment with PD98059
additional information
-
serine phosphorylation of P450c17
-
KM VALUE [mM]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
0.00057 - 0.00091
17alpha-hydroxypregnenolone
0.0029 - 0.0071
17alpha-hydroxyprogesterone
0.00049 - 0.0011
pregnenolone
0.0011 - 0.0097
progesterone
0.00027 - 0.00039
17alpha-hydroxypregnenolone
0.0006
5alpha-pregnan-3alpha,17alpha-diol-20-one
-
pH 7.4
TURNOVER NUMBER [1/s]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
0.0059 - 0.0071
17alpha-hydroxypregnenolone
0.00031 - 0.0019
17alpha-hydroxyprogesterone
0.0037 - 0.11
pregnenolone
0.0064 - 0.17
progesterone
10 - 128
17alpha-hydroxypregnenolone
kcat/KM VALUE [1/mMs-1]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
7.8 - 10
17alpha-hydroxypregnenolone
0.11 - 2.7
17alpha-hydroxyprogesterone
7.4 - 100
pregnenolone
4.7 - 40
progesterone
IC50 VALUE [mM]
INHIBITOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
0.000084
dioctyltin chloride
Homo sapiens
H295R cell assay, pH and temperature not specified in the publication
0.016
flusilazole
Homo sapiens
H295R cell assay, pH and temperature not specified in the publication
0.00007
ketoconazole
Homo sapiens
H295R cell assay, pH and temperature not specified in the publication
0.000061
SU10603
Homo sapiens
H295R cell assay, pH and temperature not specified in the publication
0.013
2'-[[(E)-3beta-hydroxyandrost-5-en-17-ylidene]methyl]-4',4'-dimethyl-4',5'-dihydro-1',3'-oxazole
Homo sapiens
-
at pH 7.4 and 37°C
0.0009
2'-[[(E)-3beta-hydroxyandrost-5-en-17-ylidene]methyl]-4',5'-dihydro-1',3'-oxazole
Homo sapiens
-
at pH 7.4 and 37°C
0.0013
abiraterone
Homo sapiens
-
at pH 7.4 and 37°C
SPECIFIC ACTIVITY [µmol/min/mg]
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
0.0000375
H295R cell assay, pH and temperature not specified in the publication
additional information
17alpha-hydroxylase and 17,20-lyase activities of purified enzyme, comparisons of different species, overview
ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
SOURCE TISSUE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
SOURCE
human adrenocorticocarcinoma cell line
Manually annotated by BRENDA team
-
zona fasciculata, zona reticularis
Manually annotated by BRENDA team
-
peripheral blood leukocyte
Manually annotated by BRENDA team
-
ovarian granulosa-like tumor cell line, most of the cells are strongly positive for CYP17 and CYP19, especially in the perinuclear region
Manually annotated by BRENDA team
-
peripheral blood leukocyte
Manually annotated by BRENDA team
additional information
the tissue-specific expression pattern of the CYP17 gene differs among species. The human mRNA appears to be ubiquitously expressed in all tissues,with the highest levels detected in testis and adrenals, and also in various human fetal tissues. The enzyme occurs in steroidogenic cells
Manually annotated by BRENDA team
LOCALIZATION
ORGANISM
UNIPROT
COMMENTARY hide
GeneOntology No.
LITERATURE
SOURCE
-
perinucleus
Manually annotated by BRENDA team
GENERAL INFORMATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
physiological function
within living cells there are close interactions between cytochrome P450c17 and cytochrome b5. Residues E48 and E49 in cytochrome b5 are essential for activity, specific protein-protein interactions take place in a lipid membrane. The wild type cytochrome b5, but not a mutated, E48G/E49G cyt b5, alters the kinetics of electron transfer between the electrode and the P450c17
malfunction
physiological function
UNIPROT
ENTRY NAME
ORGANISM
NO. OF AA
NO. OF TRANSM. HELICES
MOLECULAR WEIGHT[Da]
SOURCE
SEQUENCE
LOCALIZATION PREDICTION?
CP17A_HUMAN
508
0
57371
Swiss-Prot
Secretory Pathway (Reliability: 1)
POSTTRANSLATIONAL MODIFICATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
phosphoprotein
phosphorylation of the CYP17 protein affects its stability and activity
phosphoprotein
-
-
CRYSTALLIZATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
resonance Raman spectroscopy of ferric form reveals that binding of substrate causes variable degrees of conversion from the low spin to high spin state, with the nonhydroxylated progesterone and pregnenolone yielding almost complete high spin form, while the two hydroxylated substrates (17-hydroxyprogesterone and 17-hydroxypregnenolone) give only about a 60% conversion to high spin. The heme structure and its interactions with the active site protein residues remain constant for all four substrates
PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
D298V
mutant without heme-binding properties
E305G
naturally occurring P450 17A1 mutation, impairs 17,20-lyase activity. Cytochrome b5 fails to rescue the poor coupling with 17-hydroxypregnenolone
G111D
mutant without heme-binding properties
G301I
mutant without heme-binding properties
G90D
the mutation results in loss of the 17alpha-hydroxylase and 17,20-lyase activities
P342T
the mutant shows 20% of wild type activity
Q461stop
naturally occuring mutation, inactive mutant
R347H
R358Q
R449A
R496C
naturally occuring mutation, the mutant has low 17alpha-hydroxylase and 17,20-lyase activities
R96W
the mutation results in loss of the 17alpha-hydroxylase and 17,20-lyase activities
S106P
the mutation results in loss of the 17alpha-hydroxylase and 17,20-lyase activities
T306A
mutation in the conserved active-site threonine, both the activity and coupling are markedly decreased with all substrates
T64S
the mutant shows 15% of wild type activity
A355T
-
shows a complete loss of enzymatic activity. Is expressed in transfected COS-1 cells in a fashion comparable to the wild-type protein. Less severely affected patient with ambiguous genitalia
DELTAF54
-
partially reduces enzymatic activities
G111S
-
shows a complete loss of enzymatic activity. Is expressed in transfected COS-1 cells in a fashion comparable to the wild-type protein. Leads to complete lack of masculinization in the patient
H373N
-
mutation almost completely eliminates enzymatic activities
I332T
-
retains some residual 17,20-lyase activity (10%). Is expressed in transfected COS-1 cells in a fashion comparable to the wild-type protein. Less severely affected patient with ambiguous genitalia
R358X
-
mutant, CGA to TGA, alteration introduces premature stop codon, inactive protein
R440H
-
shows a complete loss of enzymatic activity. Leads to complete lack of masculinization in the patient
T306A
-
mutation in the conserved acid/alcohol pair thought to be essential for the efficient delivery of protons. Mutant protein co-incorporated in nanodiscs with its redox partner cytochrome P450 oxidoreductase, couples NADPH only by 0.9% and 0.7% compared to the wild type (97% and 22%) during the conversion of pregnenolone and progesterone, respectively. Hydroxylase activity is drastically diminished in the mutant, while catalysis of carbon-carbon bond scission is largely unimpeded
Y329DEL-SUB
-
mutant, TAC to AA, alteration introduces premature stop codon, inactive protein
additional information
CLONED (Commentary)
ORGANISM
UNIPROT
LITERATURE
gene CYP17A1, DNA and amino acid sequence determination and analysis, sequence comparisons and phylogenetic analysis, expression of wild-type and mutant enzymes in COS-1 cells
expressed in Pichia pastoris
-
recombinant expression in Escherichia coli
-
wild-type or mutant CYP17A1 cDNA, after addition of an N-terminal myc-tag, inserted into a pcDNA3.1 vector, transiently transfected into confluent COS-1 cells
-
APPLICATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
medicine
REF.
AUTHORS
TITLE
JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
Nestler, J.E.; McClanahan, M.A.; Clore, J.N.; Blackard, W.G.
Insulin inhibits adrenal 17,20-lyase activity in man
J. Clin. Endocrinol.
74
362-367
1992
Homo sapiens
Manually annotated by BRENDA team
Burke, D.F.; Laughton, C.A.; Neidle, S.
Homology modelling of the enzyme P450 17alpha-hydroxylase/17,20-lyase-a taget for prostate cancer chemotherapy-from the crystal structure of P450BM-3
Anticancer Drug Des.
12
113-123
1997
Homo sapiens
Manually annotated by BRENDA team
Gupta, M.K.; Guryev, O.L.; Auchus, R.J.
5alpha-reduced C21 steroids are substrates for human cytochrome P450c17
Arch. Biochem. Biophys.
418
151-160
2003
Homo sapiens
Manually annotated by BRENDA team
Akhtar, M.K.; Kelly, S.L.; Kaderbhai, M.A.
Cytochrome b5 modulation of 17alpha hydroxylase and 17-20 lyase (CYP17) activities in steroidogenesis
J. Endocrinol.
187
267-274
2005
Homo sapiens
Manually annotated by BRENDA team
Kolar, N.W.; Swart, A.C.; Mason, J.I.; Swart, P.
Functional expression and characterisation of human cytochrome P45017alpha in Pichia pastoris
J. Biotechnol.
129
635-644
2007
Homo sapiens
Manually annotated by BRENDA team
Martin, R.M.; Oliveira, P.S.; Costa, E.M.; Arnhold, I.J.; Mendonca, B.B.
Combined 17 alpha-hydroxylase/17,20-lyase deficiency due to a homozygous 25 BP duplication (NT 4157-4181) at exon 5 in the CYP17 resulting in a premature stop codon predicted by molecular modeling
Arq. Bras. Endocrinol. Metabol.
52
1317-1320
2008
Homo sapiens
Manually annotated by BRENDA team
Hershkovitz, E.; Parvari, R.; Wudy, S.A.; Hartmann, M.F.; Gomes, L.G.; Loewental, N.; Miller, W.L.
Homozygous mutation G539R in the gene for P450 oxidoreductase in a family previously diagnosed as having 17,20-lyase deficiency
J. Clin. Endocrinol. Metab.
93
3584-3588
2008
Homo sapiens
Manually annotated by BRENDA team
Bhangoo, A.; Aisenberg, J.; Chartoffe, A.; Ten, S.; Wallerstein, R.J.; Wolf, R.; Auchus, R.J.
Novel mutation in cytochrome P450c17 causes complete combined 17alpha-hydroxylase/17,20-lyase deficiency
J. Pediatr. Endocrinol. Metab.
21
185-190
2008
Homo sapiens
Manually annotated by BRENDA team
Vasaitis, T.; Belosay, A.; Schayowitz, A.; Khandelwal, A.; Chopra, P.; Gediya, L.K.; Guo, Z.; Fang, H.B.; Njar, V.C.; Brodie, A.M.
Androgen receptor inactivation contributes to antitumor efficacy of 17{alpha}-hydroxylase/17,20-lyase inhibitor 3beta-hydroxy-17-(1H-benzimidazole-1-yl)androsta-5,16-diene in prostate cancer
Mol. Cancer Ther.
7
2348-2357
2008
Homo sapiens
Manually annotated by BRENDA team
Bruno, R.D.; Gover, T.D.; Burger, A.M.; Brodie, A.M.; Njar, V.C.
17alpha-Hydroxylase/17,20 lyase inhibitor VN/124-1 inhibits growth of androgen-independent prostate cancer cells via induction of the endoplasmic reticulum stress response
Mol. Cancer Ther.
7
2828-2836
2008
Homo sapiens
Manually annotated by BRENDA team
Shackleton, C.H.; Neres, M.S.; Hughes, B.A.; Stewart, P.M.; Kater, C.E.
17-Hydroxylase/C17,20-lyase (CYP17) is not the enzyme responsible for side-chain cleavage of cortisol and its metabolites
Steroids
73
652-656
2008
Homo sapiens
Manually annotated by BRENDA team
Rosa, S.; Steigert, M.; Lang-Muritano, M.; lAllemand, D.; Schoenle, E.J.; Biason-Lauber, A.
Clinical, genetic and functional characteristics of three novel CYP17A1 mutations causing combined 17alpha-hydroxylase/17,20-lyase deficiency
Horm. Res. Paediatr.
73
198-204
2010
Homo sapiens
Manually annotated by BRENDA team
Katsumata, N.; Ogawa, E.; Fujiwara, I.; Fujikura, K.
Novel CYP17A1 mutation in a Japanese patient with combined 17alpha-hydroxylase/17,20-lyase deficiency
Metab. Clin. Exp.
59
275-278
2009
Homo sapiens
Manually annotated by BRENDA team
Shumyantseva, V.; Bulko, T.; Misharin, A.; Archakov, A.
Screening of potential substrates or inhibitors of cytochrome P450 17A1 (CYP17A1) by electrochemical methods
Biochemistry (Moscow) Suppl. Ser. B
57
402-409
2011
Homo sapiens
Manually annotated by BRENDA team
Gilep, A.A.; Sushko, T.A.; Usanov, S.A.
At the crossroads of steroid hormone biosynthesis: the role, substrate specificity and evolutionary development of CYP17
Biochim. Biophys. Acta
1814
200-209
2011
Papio sp., Bison bison, Bos taurus, Capra hircus, Cavia porcellus, Equus caballus, Felis catus, Ovis aries, Mus musculus, Pan troglodytes, Rattus norvegicus, Sus scrofa, Homo sapiens (P05093)
Manually annotated by BRENDA team
Stefanachi, A.; Favia, A.; Nicolotti, O.; Leonetti, F.; Pisani, L.; Catto, M.; Zimmer, C.; Hartmann, R.; Carotti, A.
Design, synthesis, and biological evaluation of imidazolyl derivatives of 4,7-disubstituted coumarins as aromatase inhibitors selective over 17-alpha-hydroxylase/C17-20 lyase
J. Med. Chem.
54
1613-1625
2011
Homo sapiens
Manually annotated by BRENDA team
Khatri, Y.; Gregory, M.C.; Grinkova, Y.V.; Denisov, I.G.; Sligar, S.G.
Active site proton delivery and the lyase activity of human CYP17A1
Biochem. Biophys. Res. Commun.
443
179-184
2014
Homo sapiens
Manually annotated by BRENDA team
Kovacs, D.; Wlfling, J.; Szabo, N.; Szecsi, M.; Kovacs, I.; Zupko, I.; Frank, E.
An efficient approach to novel 17-5'-(1',2',4')-oxadiazolyl androstenes via the cyclodehydration of cytotoxic O-steroidacylamidoximes, and an evaluation of their inhibitory action on 17alpha-hydroxylase/C17,20-lyase
Eur. J. Med. Chem.
70
649-660
2013
Homo sapiens, Rattus norvegicus
Manually annotated by BRENDA team
Roelofs, M.J.; Piersma, A.H.; van den Berg, M.; van Duursen, M.B.
The relevance of chemical interactions with CYP17 enzyme activity: assessment using a novel in vitro assay
Toxicol. Appl. Pharmacol.
268
309-317
2013
Sus scrofa, Homo sapiens (P05093), Homo sapiens
Manually annotated by BRENDA team
Yoshimoto, F.K.; Auchus, R.J.
The diverse chemistry of cytochrome P450 17A1 (P450c17, CYP17A1)
J. Steroid Biochem. Mol. Biol.
151
52-65
2015
Homo sapiens (P05093), Homo sapiens
Manually annotated by BRENDA team
Kuzikov, A.V.; Dugin, N.O.; Stulov, S.V.; Shcherbinin, D.S.; Zharkova, M.S.; Tkachev, Y.V.; Timofeev, V.P.; Veselovsky, A.V.; Shumyantseva, V.V.; Misharin, A.Y.
Novel oxazolinyl derivatives of pregna-5,17(20)-diene as 17alpha-hydroxylase/17,20-lyase (CYP17A1) inhibitors
Steroids
88
66-71
2014
Homo sapiens
Manually annotated by BRENDA team
Mak, P.J.; Gregory, M.C.; Sligar, S.G.; Kincaid, J.R.
Resonance Raman spectroscopy reveals that substrate structure selectively impacts the heme-bound diatomic ligands of CYP17
Biochemistry
53
90-100
2014
Homo sapiens (P05093)
Manually annotated by BRENDA team
Peng, H.M.; Im, S.C.; Pearl, N.M.; Turcu, A.F.; Rege, J.; Waskell, L.; Auchus, R.J.
Cytochrome b5 Activates the 17,20-lyase activity of human cytochrome P450 17A1 by increasing the coupling of NADPH consumption to androgen production
Biochemistry
55
4356-4365
2016
Homo sapiens (P05093), Homo sapiens
Manually annotated by BRENDA team
Huang, X.; Jin, J.; Shen, S.; Xia, Y.; Xu, P.; Zou, X.; Wang, H.; Yi, L.; Wang, Y.; Gao, Q.
Modulation of expression of 17-Hydroxylase/17,20 lyase (CYP17) and P450 aromatase (CYP19) by inhibition of MEK1 in a human ovarian granulosa-like tumor cell line
Gynecol. Endocrinol.
32
201-205
2016
Homo sapiens
Manually annotated by BRENDA team
Simonov, A.N.; Holien, J.K.; Yeung, J.C.; Nguyen, A.D.; Corbin, C.J.; Zheng, J.; Kuznetsov, V.L.; Auchus, R.J.; Conley, A.J.; Bond, A.M.; Parker, M.W.; Rodgers, R.J.; Martin, L.L.
Mechanistic scrutiny identifies a kinetic role for cytochrome b5 regulation of human cytochrome P450c17 (CYP17A1, P450 17A1)
PLoS ONE
10
e0141252
2015
Homo sapiens (P05093), Homo sapiens
Manually annotated by BRENDA team
Gonzalez, E.; Guengerich, F.P.
Kinetic processivity of the two-step oxidations of progesterone and pregnenolone to androgens by human cytochrome P450 17A1
J. Biol. Chem.
292
13168-13185
2017
Homo sapiens (P05093), Homo sapiens
Manually annotated by BRENDA team
Toren, P.J.; Kim, S.; Pham, S.; Mangalji, A.; Adomat, H.; Guns, E.S.; Zoubeidi, A.; Moore, W.; Gleave, M.E.
Anticancer activity of a novel selective CYP17A1 inhibitor in preclinical models of castrate-resistant prostate cancer
Mol. Cancer Ther.
14
59-69
2015
Homo sapiens
Manually annotated by BRENDA team