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1-indanol + NADP+
1-indanone + NADPH
-
Substrates: -
Products: -
?
3-hydroxyhexobarbital + NADP+
?
-
Substrates: does not serve as a substrate for guinea pig enzyme
Products: -
?
benzenedihydrodiol + NADP+
?
-
Substrates: -
Products: -
?
codeine + NAD(P)+
codeinone + NAD(P)H
codeine + NADP+
codeinone + NADPH
cyclohexene-2-ol + NADP+
cyclohexene-2-one + NADPH
-
Substrates: -
Products: -
?
dihydrocodeine + NADP+
dihydrocodeinone + NADPH
ethylmorphine + NAD(P)+
?
morphine + NAD(P)+
morphinone + NAD(P)H
-
Substrates: -
Products: -
ir
morphine + NAD+
?
Substrates: -
Products: -
?
morphine + NAD+
morphinone + NADH + H+
J7M9D0
Substrates: -
Products: -
?
morphine + NADP+
morphinone + NADPH
morphine + NADP+
morphinone + NADPH + H+
nalorphine + NAD(P)+
(5alpha)-3-hydroxy-17-(prop-2-en-1-yl)-7,8-didehydro-4,5-epoxymorphinan-6-one + NAD(P)H + H+
naloxone + NAD(P)H
6alpha-naloxol + NADP+
trans-1,4-decalindiol + NADP+
?
-
Substrates: about 30% of the activity observed with morphine
Products: -
?
trans-naphthalene dihydrodiol + NAD+
?
Substrates: -
Products: -
?
trans-naphthalene dihydrodiol + NAD+
? + NADH + H+
J7M9D0
Substrates: -
Products: -
?
additional information
?
-
codeine + NAD(P)+

codeinone + NAD(P)H
-
Substrates: oxidation at 80% the rate of morphine oxidation
Products: -
?
codeine + NAD(P)+
codeinone + NAD(P)H
-
Substrates: oxidation at 80% the rate of morphine oxidation
Products: -
?
codeine + NAD(P)+
codeinone + NAD(P)H
-
Substrates: only weak enzyme activity for codeine
Products: -
?
codeine + NAD(P)+
codeinone + NAD(P)H
-
Substrates: codeine best substrate
Products: -
?
codeine + NAD(P)+
codeinone + NAD(P)H
-
Substrates: oxidation at 120% the rate of morphine oxidation
Products: at pH 6.5, + NADPH, reduction of codeinone to codeine
r
codeine + NAD(P)+
codeinone + NAD(P)H
-
Substrates: non-Theorell-Chance sequential ordered mechanism for codeine oxidation at pH 9.5
Products: morphine dehydrogenase follows a Theorell-Chance mechanism for codeinone reduction at pH 7.0
?
codeine + NAD(P)+
codeinone + NAD(P)H
-
Substrates: -
Products: -
?
codeine + NAD(P)+
codeinone + NAD(P)H
-
Substrates: -
Products: -
?
codeine + NAD(P)+
codeinone + NAD(P)H
-
Substrates: oxidation at 120% the rate of morphine oxidation
Products: at pH 6.5, + NADPH, reduction of codeinone to codeine
r
codeine + NAD(P)+
codeinone + NAD(P)H
-
Substrates: non-Theorell-Chance sequential ordered mechanism for codeine oxidation at pH 9.5
Products: morphine dehydrogenase follows a Theorell-Chance mechanism for codeinone reduction at pH 7.0
?
codeine + NADP+

codeinone + NADPH
-
Substrates: codeine as the sole carbon and energy source
Products: -
?
codeine + NADP+
codeinone + NADPH
-
Substrates: codeine as the sole carbon and energy source
Products: -
?
dihydrocodeine + NADP+

dihydrocodeinone + NADPH
-
Substrates: -
Products: -
?
dihydrocodeine + NADP+
dihydrocodeinone + NADPH
-
Substrates: -
Products: -
?
dihydrocodeine + NADP+
dihydrocodeinone + NADPH
-
Substrates: -
Products: -
?
dihydrocodeine + NADP+
dihydrocodeinone + NADPH
-
Substrates: -
Products: -
?
ethylmorphine + NAD(P)+

?
-
Substrates: oxidation at 51% the rate of morphine oxidation
Products: -
?
ethylmorphine + NAD(P)+
?
-
Substrates: oxidation at 51% the rate of morphine oxidation
Products: -
?
ethylmorphine + NAD(P)+
?
-
Substrates: -
Products: -
?
morphine + NADP+

morphinone + NADPH
-
Substrates: highly specific alkaloid dehydrogenase, oxidizing only the C-6 hydroxy group of morphine and codeine, morphine as the sole carbon and energy source
Products: -
?
morphine + NADP+
morphinone + NADPH
-
Substrates: highly specific alkaloid dehydrogenase, oxidizing only the C-6 hydroxy group of morphine and codeine, morphine as the sole carbon and energy source
Products: -
?
morphine + NADP+

morphinone + NADPH + H+
-
Substrates: -
Products: production of morphinone demonstrated in vitro experiments
?
morphine + NADP+
morphinone + NADPH + H+
-
Substrates: -
Products: -
?
morphine + NADP+
morphinone + NADPH + H+
-
Substrates: -
Products: production of morphinone demonstrated in vitro experiments
?
morphine + NADP+
morphinone + NADPH + H+
-
Substrates: -
Products: -
?
morphine + NADP+
morphinone + NADPH + H+
-
Substrates: enzyme activity only with NAD+
Products: -
?
morphine + NADP+
morphinone + NADPH + H+
-
Substrates: enzyme acitivity with NAD+ four times that with NADP+
Products: -
?
morphine + NADP+
morphinone + NADPH + H+
-
Substrates: enzyme activity only with NADP+
Products: -
?
morphine + NADP+
morphinone + NADPH + H+
-
Substrates: enzyme activity only with NADP+
Products: -
?
morphine + NADP+
morphinone + NADPH + H+
-
Substrates: + NAD+: enzyme activity ten times that with NADP+
Products: -
?
morphine + NADP+
morphinone + NADPH + H+
-
Substrates: + NAD+: enzyme activity ten times that with NADP+
Products: -
?
nalorphine + NAD(P)+

(5alpha)-3-hydroxy-17-(prop-2-en-1-yl)-7,8-didehydro-4,5-epoxymorphinan-6-one + NAD(P)H + H+
-
Substrates: best substrate, oxidation at 120% the rate of morphine oxidation
Products: -
?
nalorphine + NAD(P)+
(5alpha)-3-hydroxy-17-(prop-2-en-1-yl)-7,8-didehydro-4,5-epoxymorphinan-6-one + NAD(P)H + H+
-
Substrates: best substrate, oxidation at 120% the rate of morphine oxidation
Products: -
?
naloxone + NAD(P)H

6alpha-naloxol + NADP+
-
Substrates: -
Products: stereospecific reduction
?
naloxone + NAD(P)H
6alpha-naloxol + NADP+
-
Substrates: -
Products: stereospecific reduction
?
naloxone + NADH + H+

?
-
Substrates: -
Products: -
r
naloxone + NADH + H+
?
-
Substrates: -
Products: -
r
normorphine + NAD(P)+

?
-
Substrates: about 3 times better substrate than morphine
Products: -
?
normorphine + NAD(P)+
?
-
Substrates: about 3 times better substrate than morphine
Products: -
?
normorphine + NAD(P)+
?
-
Substrates: best substrate, oxidation at 139% the rate of morphine oxidation
Products: -
?
normorphine + NAD(P)+
?
-
Substrates: -
Products: -
?
additional information

?
-
Substrates: the enzyme AKR1C34 shows 3alpha/17beta/20alpha-hydroxysteroid dehydrogenase activities, EC 1.1.1.239, detailed overview. Ala54 plays a critical role in non-/recognition of the steroidal substrates. Reaction products identification by thin-layer chromatography (TLC) and liquid chromatography/mass spectrometry (LC/MS)
Products: -
?
additional information
?
-
-
Substrates: the enzyme AKR1C34 shows 3alpha/17beta/20alpha-hydroxysteroid dehydrogenase activities, EC 1.1.1.239, detailed overview. Ala54 plays a critical role in non-/recognition of the steroidal substrates. Reaction products identification by thin-layer chromatography (TLC) and liquid chromatography/mass spectrometry (LC/MS)
Products: -
?
additional information
?
-
J7M9D0
Substrates: the enzyme shows NAD+-dependent dehydrogenase activity towards other nonsteroidal alicyclic alcohols and 3alpha/17beta-hydroxy-C18/C19/C21-steroids, detailed overview
Products: -
?
additional information
?
-
-
Substrates: the enzyme shows NAD+-dependent dehydrogenase activity towards other nonsteroidal alicyclic alcohols and 3alpha/17beta-hydroxy-C18/C19/C21-steroids, detailed overview
Products: -
?
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5alpha-dihydrotestosterone
5beta-dihydrotestosterone
Barbital
-
1mM, 68% inhibition
CdCl2
-
dithiol modifier, strong competitive inhibitor to cofactor
chenodeoxycholic acid
-
0.1 mM, 24% inhibition
cholic acid
-
0.1 mM, 10% inhibition
epiandrosterone
-
0.1 mM, 77% inhibition
indomethacin
-
1 mM, 84% inhibition
naloxone
-
1mM, 61% inhibition
noranhydroicaritin
J7M9D0
-
p-chloromercuribenzoic acid
pyrazole
-
1 mM, 20% inhibition
5alpha-dihydrotestosterone

-
0.1 mM, complete inhibition
5alpha-dihydrotestosterone
-
-
5beta-dihydrotestosterone

-
0.1 mM, complete inhibition
5beta-dihydrotestosterone
-
-
5beta-dihydrotestosterone
-
-
androsterone

-
0.1 mM, 76% inhibition
CuSO4

-
-
estradiol

-
0.1 mM, complete inhibition
Hexestrol

-
hinokitiol

-
Ketamine

-
-
Ketamine
-
1mM, 60% inhibition
lithocholic acid

-
-
lithocholic acid
-
0.1 mM, 75% inhibition
lithocholic acid
-
moderate inhibitory effect
NEM

-
-
NEM
-
inhibit activity at much higher concentration (e.g. at 1 mM)
p-chloromercuribenzoic acid

-
-
p-chloromercuribenzoic acid
-
-
Phenolphthalein

-
Phenylarsine oxide

-
dithiol modifier, competitive inhibitor to cofactor binding and noncompetitively toward morphine binding
quercetin

-
weak inhibitory effect
quercitrin

-
-
testosterone

-
0.1 mM, 100% inhibition
additional information

-
no inhibition by NEM, PCMB, iodoacetic acid
-
additional information
-
no or weak inhibition by pyrazole, barbital
-
additional information
-
competitive inhibitors: testosterone, 5alpha-androstan-17beta-ol-3-one, 5beta-androsteran-17beta-ol-3-one; no inhibition by indomethacine; no or weak inhibition by pyrazole, barbital
-
additional information
no or poor inhibition by 7-hydroxyflavone, chrysin, quercetin, genistein, galangin, lithocholic acid, and zearalenone
-
additional information
-
no or poor inhibition by 7-hydroxyflavone, chrysin, quercetin, genistein, galangin, lithocholic acid, and zearalenone
-
additional information
-
5beta-dihydrotestosterone, lithocholic acid, androsterone and estradiol inhibit competitively toward morphine binding; little inhibitory effect: indomethacin, prostaglandins E2, D2; no or weak inhibition by pyrazole, barbital
-
additional information
-
no inhibition by EDTA, NEM, hydroxyquinoline
-
additional information
-
competitive inhibition: NADP+ with respect to NADPH, codeine with respect to codeinone
-
additional information
-
no or weak inhibition by pyrazole, barbital
-
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0.0032 - 0.037
hinokitiol
0.05
icarisid II
Oryctolagus cuniculus
J7M9D0
above, pH 7.4, 25°C, recombinant enzyme
0.013
ikarisoside A
Oryctolagus cuniculus
J7M9D0
pH 7.4, 25°C, recombinant enzyme
0.02
kaempferol
Oryctolagus cuniculus
J7M9D0
above, pH 7.4, 25°C, recombinant enzyme
0.0064
noranhydroicaritin
Oryctolagus cuniculus
J7M9D0
pH 7.4, 25°C, recombinant enzyme
0.00065 - 0.007
Phenolphthalein
0.026
quercetin
Oryctolagus cuniculus
J7M9D0
pH 7.4, 25°C, recombinant enzyme
0.04
quercitrin
Oryctolagus cuniculus
J7M9D0
pH 7.4, 25°C, recombinant enzyme
0.05
zearalenone
Oryctolagus cuniculus
J7M9D0
above, pH 7.4, 25°C, recombinant enzyme
0.0013
Hexestrol

Mesocricetus auratus
pH 7.4, 25°C, recombinant enzyme
0.073
Hexestrol
Oryctolagus cuniculus
J7M9D0
pH 7.4, 25°C, recombinant enzyme
0.0032
hinokitiol

Mesocricetus auratus
pH 7.4, 25°C, recombinant enzyme
0.037
hinokitiol
Oryctolagus cuniculus
J7M9D0
pH 7.4, 25°C, recombinant enzyme
0.00065
Phenolphthalein

Mesocricetus auratus
pH 7.4, 25°C, recombinant enzyme
0.007
Phenolphthalein
Oryctolagus cuniculus
J7M9D0
pH 7.4, 25°C, recombinant enzyme
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C80S
-
change of cysteine to serine: significantly improved stability
D47N
-
residue modified by site-directed mutagenesis, resulting in substantial loss of activity
K76M
-
residue modified by site-directed mutagenesis, resulting in substantial loss of activity
C80S
-
change of cysteine to serine: significantly improved stability
-
D47N
-
residue modified by site-directed mutagenesis, resulting in substantial loss of activity
-
K76M
-
residue modified by site-directed mutagenesis, resulting in substantial loss of activity
-
Y52F

-
F is incapable of acting as proton donor /aim: NAD+-dependent morphine dehydrogenase for biotransformation morphine-morphinone-hydromorphine, codeine-hydrocodone respectively (medically useful semisynthetic opiates)
Y52F
-
residue modified by site-directed mutagenesis, resulting in substantial loss of activity
Y52F

-
F is incapable of acting as proton donor /aim: NAD+-dependent morphine dehydrogenase for biotransformation morphine-morphinone-hydromorphine, codeine-hydrocodone respectively (medically useful semisynthetic opiates)
-
Y52F
-
residue modified by site-directed mutagenesis, resulting in substantial loss of activity
-
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Yamano, S; Kageura, E.; Ishida, T.; Toki, S.
Purification and characterization of guinea pig liver morphine 6-dehydrogenase
J. Biol. Chem.
260
5259-5264
1985
Cavia porcellus, Cavia porcellus Hartley
brenda
Yamano, S.; Nishida, F; Toki, S.
Guinea-pig liver morphine 6-dehydrogenase as a naloxone reductase
Biochem. Pharmacol.
35
4321-4326
1986
Cavia porcellus, Cavia porcellus Hartley
brenda
Bruce, N.C.; Wilmot, C.J.; Jordan, K.N.; Trebilcock, A.E.; Stephens, L.D.G.; Lowe, Ch.R.
Microbial degradation of the morphine alkaloids: identification of morphinone as an intermediate in the metabolism of morphine by Pseudomonas putida M10
Arch. Microbiol.
154
465-470
1990
Pseudomonas putida, Pseudomonas putida M10
brenda
Bruce, N.C.; Wilmot, C.J.; Jordan, K.N.; Stephens, L.D.G.; Lowe, Ch.R.
Microbial degradation of the morphine alkaloids
Biochem. J.
274
875-880
1991
Pseudomonas putida, Pseudomonas putida M10
-
brenda
Walker, E.H.; Bruce, N.C.
Towards engineering an improved morphine dehydrogenase
Ann. N. Y. Acad. Sci.
799
6-10
1996
Pseudomonas putida, Pseudomonas putida M10
brenda
Yamano, S.; Ito, K.; Ogata, S.; Toki, S.
Purification, characterization and partial primary structure of morphine 6-dehydrogenase from rabbit liver cytosol
Arch. Biochem. Biophys.
341
81-88
1997
Oryctolagus cuniculus
brenda
Yamano, S.; Takahashi, A.; Todaka, T.; Toki, S.
In vivo and in vitro formation of morphinone from morphine in rat
Xenobiotica
27
645-656
1997
Rattus norvegicus, Rattus norvegicus Wistar
brenda
Todaka, T.; Yamano, S.; Toki, S.
Purification and characterization of NAD-dependent morphine 6-dehydrogenase from hamster liver cytosol, a new member of the aldo-keto reductase superfamily
Arch. Biochem. Biophys.
374
189-197
2000
Mesocricetus auratus
brenda
Walker, E.H.; French, C.E.; Rathbone, D.A.; Bruce, N.C.
Mechanistic studies of morphine dehydrogenase and stabilization against covalent inactivation
Biochem. J.
345
687-692
2000
Pseudomonas putida, Pseudomonas putida M10
brenda
Todaka, T.; Ishida, T.; Kita, H.; Narimatsu, S.; Yamano, S.
Bioactivation of morphine in human liver: isolation and identification of morphinone, a toxic metabolite
Biol. Pharm. Bull.
28
1275-1280
2005
Homo sapiens
brenda
Endo, S.; Matsunaga, T.; Fujimoto, A.; Kumada, S.; Arai, Y.; Miura, Y.; Mikamo, H.; El-Kabbani, O.; Yamano, S.; Iinuma, M.; Hara, A.
Characterization of rabbit morphine 6-dehydrogenase and two NAD+-dependent 3alpha(17beta)-hydroxysteroid dehydrogenases
Arch. Biochem. Biophys.
529
131-139
2013
Oryctolagus cuniculus (J7M9D0), Oryctolagus cuniculus
brenda
Endo, S.; Noda, M.; Ikari, A.; Tatematsu, K.; El-Kabbani, O.; Hara, A.; Kitade, Y.; Matsunaga, T.
Characterization of hamster NAD+-dependent 3(17)beta-hydroxysteroid dehydrogenase belonging to the aldo-keto reductase 1C subfamily
J. Biochem.
158
425-434
2015
Mesocricetus auratus (A0A097ZMY7), Mesocricetus auratus
brenda