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Information on EC 1.14.18.1 - tyrosinase and Organism(s) Homo sapiens and UniProt Accession P14679

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IUBMB Comments
A type III copper protein found in a broad variety of bacteria, fungi, plants, insects, crustaceans, and mammals, which is involved in the synthesis of betalains and melanin. The enzyme, which is activated upon binding molecular oxygen, can catalyse both a monophenolase reaction cycle (reaction 1) or a diphenolase reaction cycle (reaction 2). During the monophenolase cycle, one of the bound oxygen atoms is transferred to a monophenol (such as L-tyrosine), generating an o-diphenol intermediate, which is subsequently oxidized to an o-quinone and released, along with a water molecule. The enzyme remains in an inactive deoxy state, and is restored to the active oxy state by the binding of a new oxygen molecule. During the diphenolase cycle the enzyme binds an external diphenol molecule (such as L-dopa) and oxidizes it to an o-quinone that is released along with a water molecule, leaving the enzyme in the intermediate met state. The enzyme then binds a second diphenol molecule and repeats the process, ending in a deoxy state . The second reaction is identical to that catalysed by the related enzyme catechol oxidase (EC 1.10.3.1). However, the latter can not catalyse the hydroxylation or monooxygenation of monophenols.
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Homo sapiens
UNIPROT: P14679
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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, Archaea
Reaction Schemes
hide(Overall reactions are displayed. Show all >>)
2
+
=
2
+
2
Synonyms
tyrosinase, monophenolase, oxygen oxidoreductase, phenol oxidases, murine tyrosinase, melc2, o-diphenol oxidase, monophenol oxidase, met-tyrosinase, jrppo1, more
SYNONYM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
catecholase
-
cresolase
-
Diphenol oxidase
-
L-DOPA monophenolase
-
catechol oxidase
-
-
-
-
catecholase
-
-
-
-
chlorogenic acid oxidase
-
-
-
-
chlorogenic oxidase
-
-
-
-
cresolase
-
-
-
-
Diphenol oxidase
-
-
-
-
dopa oxidase
-
-
-
-
L-DOPA oxidase
-
-
monophenol dihydroxyphenylalanine:oxygen oxidoreductase
-
-
-
-
monophenol monooxidase
-
-
-
-
monophenol monooxygenase
-
-
monophenol oxidase
-
-
-
-
monophenol, dihydroxy-L-phenylalanine oxygen oxidoreductase
-
-
-
-
monophenol, dihydroxyphenylalanine:oxygen oxidoreductase
-
copper binding metalloenzyme
monophenolase
N-acetyl-6-hydroxytryptophan oxidase
-
-
-
-
o-diphenol oxidase
-
-
-
-
o-diphenol oxidoreductase
-
-
-
-
o-diphenol:O2 oxidoreductase
-
-
-
-
o-diphenol:oxygen oxidoreductase
-
-
-
-
o-diphenolase
-
-
-
-
phenol oxidase
-
-
-
-
phenolase
-
-
-
-
polyaromatic oxidase
-
-
-
-
polyphenol oxidase
-
-
-
-
polyphenolase
-
-
-
-
pyrocatechol oxidase
-
-
-
-
tyrosinase
tyrosine-dopa oxidase
-
-
-
-
additional information
-
cf. EC 1.10.3.1
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
L-tyrosine + O2 = dopaquinone + H2O
show the reaction diagram
catalytic cycle, reaction mechanism, active site structure
-
REACTION TYPE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
redox reaction
-
-
-
-
oxidation
-
-
-
-
reduction
-
-
-
-
SYSTEMATIC NAME
IUBMB Comments
L-tyrosine,L-dopa:oxygen oxidoreductase
A type III copper protein found in a broad variety of bacteria, fungi, plants, insects, crustaceans, and mammals, which is involved in the synthesis of betalains and melanin. The enzyme, which is activated upon binding molecular oxygen, can catalyse both a monophenolase reaction cycle (reaction 1) or a diphenolase reaction cycle (reaction 2). During the monophenolase cycle, one of the bound oxygen atoms is transferred to a monophenol (such as L-tyrosine), generating an o-diphenol intermediate, which is subsequently oxidized to an o-quinone and released, along with a water molecule. The enzyme remains in an inactive deoxy state, and is restored to the active oxy state by the binding of a new oxygen molecule. During the diphenolase cycle the enzyme binds an external diphenol molecule (such as L-dopa) and oxidizes it to an o-quinone that is released along with a water molecule, leaving the enzyme in the intermediate met state. The enzyme then binds a second diphenol molecule and repeats the process, ending in a deoxy state [7]. The second reaction is identical to that catalysed by the related enzyme catechol oxidase (EC 1.10.3.1). However, the latter can not catalyse the hydroxylation or monooxygenation of monophenols.
CAS REGISTRY NUMBER
COMMENTARY hide
9002-10-2
not distinguished from EC 1.10.3.1
SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
2 L-dopa + O2
2 dopaquinone + 2 H2O
show the reaction diagram
3,4-dihydroxyphenylacetic acid + O2
?
show the reaction diagram
-
-
-
?
4-methylcatechol + O2
?
show the reaction diagram
-
-
-
?
4-tert-butylcatechol + O2
?
show the reaction diagram
-
-
-
?
catechol + O2
?
show the reaction diagram
-
-
-
?
dopamine + O2
?
show the reaction diagram
-
-
-
?
L-dopa methyl ester + O2
?
show the reaction diagram
-
-
-
?
L-isoproterenol + O2
?
show the reaction diagram
-
-
-
?
L-tyrosine + O2
dopaquinone + H2O
show the reaction diagram
-
-
-
?
tyrosine + O2
dopaquinone + H2O
show the reaction diagram
2 L-dopa + O2
2 dopaquinone + 2 H2O
show the reaction diagram
-
-
-
-
?
3,4,5-trihydroxy-L-phenylalanine + O2
?
show the reaction diagram
5,6-dihydroxyindole + 1/2 O2
1H-indole-5,6-dione + H2O
show the reaction diagram
-
-
-
-
?
L-3,4-dihydroxyphenylalanine + 1/2 O2
L-dopaquinone + H2O
show the reaction diagram
-
-
-
-
?
L-dopa + 1/2 O2
L-dopaquinone + H2O
show the reaction diagram
-
-
-
-
?
L-DOPA + O2
dopaquinone + H2O
show the reaction diagram
-
-
-
-
?
L-tyrosine + L-dopa + O2
L-dopa + dopaquinone + H2O
show the reaction diagram
L-tyrosine + O2
L-DOPA + H2O
show the reaction diagram
-
-
-
-
?
L-tyrosine + O2 + AH2
L-dopa + H2O + A
show the reaction diagram
-
-
-
-
?
tyrosine + O2
dopaquinone + H2O
show the reaction diagram
-
-
-
-
?
tyrosine + O2 + AH2
L-dopa + H2O + A
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
2 L-dopa + O2
2 dopaquinone + 2 H2O
show the reaction diagram
L-tyrosine + O2
dopaquinone + H2O
show the reaction diagram
-
-
-
?
tyrosine + O2
dopaquinone + H2O
show the reaction diagram
2 L-dopa + O2
2 dopaquinone + 2 H2O
show the reaction diagram
-
-
-
-
?
3,4,5-trihydroxy-L-phenylalanine + O2
?
show the reaction diagram
-
cytotoxicity of TOPA
-
-
?
L-tyrosine + L-dopa + O2
L-dopa + dopaquinone + H2O
show the reaction diagram
tyrosine + O2
dopaquinone + H2O
show the reaction diagram
-
-
-
-
?
additional information
?
-
-
tyrosinase is known to be a key enzyme in melanin biosynthesis, involved in determining the color of mammalian skin and hair, various dermatological disorders, such as melasma, age spots and sites of actinic damage, arise from the accumulation of an excessive level of epidermal pigmentation
-
-
?
COFACTOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
additional information
-
if L-DOPA is an active cofactor, its formation as an intermediate during o-dopaquinone production is controversial
-
METALS and IONS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
copper
-
2 gatom per mol
H2O2
-
the exogenous oxygen molecule is bound as peroxide and bridges the two copper centers, conferring a distinct O2-Cu(II) charge transfer
INHIBITOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
arbutin
a glycosylated benzoquinone, ascorbic acid reduces melanin formation via reduction of dopaquinone
ascorbic acid
-
kojic acid
-
tropolone
-
(-)-epigallocatechin
-
competitive, IC50: 0.035 mM
(-)-epigallocatechin-3-O-gallate
-
competitive, IC50: 0.034 mM
(2E)-3-(3,4-dihydroxyphenyl)-N-[2-(3,4-dihydroxyphenyl)ethyl]prop-2-enamide
-
67% inhibition at 0.1 mM
(2E)-3-(3,4-dihydroxyphenyl)-N-[2-(4-hydroxyphenyl)ethyl]prop-2-enamide
-
100% inhibition at 0.1 mM
(2E)-3-(4-hydroxy-3-methoxyphenyl)-N-(2-phenylethyl)prop-2-enamide
-
19% inhibition at 0.1 mM
(2E)-3-(4-hydroxy-3-methoxyphenyl)-N-[2-(4-hydroxy-3-methoxyphenyl)ethyl]prop-2-enamide
-
40% inhibition at 0.1 mM
(2E)-3-(4-hydroxy-3-methoxyphenyl)-N-[2-(4-hydroxyphenyl)ethyl]prop-2-enamide
-
49% inhibition at 0.1 mM
(2E)-N-[2-(3,4-dihydroxyphenyl)ethyl]-3-(4-hydroxy-3-methoxyphenyl)prop-2-enamide
-
62% inhibition at 0.1 mM
(2E)-N-[2-(3,4-dimethoxyphenyl)ethyl]-3-(4-hydroxy-3-methoxyphenyl)prop-2-enamide
-
25% inhibition at 0.1 mM
(R)-HTCCA
-
-
(S)-HTCCA
-
-
(S)-imperanene
-
inhibitor in rum distillate wastewater significantly inhibits tyrosinase isolated from HMV-II cells, competitive inhibition. The inhibitory activities in descending order are (S)-imperanene 4-O-beta-D-glucopyranosyl imperanene, 4-O-beta-D-glucopyranosyl-3-methoxy imperanene
(Z)-2-(4-hydroxybenzylidene)-4-hydroxybenzofuran-3(2H)-one
-
71% inhibition at 0.1 mM
(Z)-2-(4-hydroxybenzylidene)-6-hydroxybenzofuran-3(2H)-one
-
69% inhibition at 0.1 mM
(Z)-2-(4-hydroxybenzylidene)benzofuran-3(2H)-one
-
39% inhibition at 0.1 mM
(Z)-4,6-dihydroxy-2-(4-hydroxybenzylidene)benzofuran-3(2H)-one
-
-
(Z)-4,6-dihydroxy-2-(4-methoxybenzylidene)benzofuran-3(2H)-one
-
11% inhibition at 0.1 mM
2-(3,4-dihydroxyphenyl)-N-[2-(4-hydroxyphenyl)ethyl]acetamide
-
34% inhibition at 0.1 mM
2-(4-hydroxy-3-methoxyphenyl)-N-[2-(4-hydroxyphenyl)ethyl]acetamide
-
16% inhibition at 0.1 mM
2-acetylamino-1,3,4-thiadiazole-5-sulfonamide
-
acetazolamideor ACZ, in vitro, in vivo, and in silico studies, inhibition kinetics. Acetazolamide is a a noncompetitive inhibitor without cytotoxic effect showing inhibition of tyrosinase expression in L-DOPA-induced melanoma. Molecular dynamics simulations, overview
3-(3,4-dihydroxyphenyl)-N-[2-(4-hydroxyphenyl)ethyl]propanamide
-
94% inhibition at 0.1 mM
3-(4-hydroxy-3-methoxyphenyl)-N-[2-(4-hydroxyphenyl)ethyl]propanamide
-
28% inhibition at 0.1 mM
3-(4-hydroxyphenyl)-N-[2-(4-hydroxyphenyl)ethyl]propanamide
-
96% inhibition at 0.1 mM
3-hydroxyphloretin
-
constituents from the formosan apple (Malus doumeri var. formosana), inhibition 73%, shows substantial cellular tyrosinase inhibitory activity at a concentration of 100 microM
3-hydroxyphloridzin
-
-
4,6,4'-trihydroxyaurone
-
75% inhibition at 0.1 mM
4-hexylresorcinol
-
-
4-O-beta-D-glucopyranosyl imperanene
-
inhibitor in rum distillate wastewater significantly inhibits tyrosinase isolated from HMV-II cells. The inhibitory activities in descending order are (S)-imperanene, 4-O-beta-D-glucopyranosyl imperanene, 4-O-beta-D-glucopyranosyl-3-methoxy imperanene
4-O-beta-D-glucopyranosyl-3-methoxy imperanene
-
inhibitor in rum distillate wastewater significantly inhibits tyrosinase isolated from HMV-II cells. The inhibitory activities in descending order are (S)-imperanene, 4-O-beta-D-glucopyranosyl imperanene, 4-O-beta-D-glucopyranosyl-3-methoxy imperanene
4-OH-cinnamic acid
-
4% inhibition at 0.1 mM
5-hydroxy-2-(hydroxymethyl)-2H-pyran-4-one
-
1.12 mM, 50% inhibition of recombinant enzyme
aloesin
-
-
Anisaldehyde
-
-
arbutin
ascorbic acid
-
exhibits less tyrosinase-inhibitory activity than 3-hydroxyphloretin or catechol
azelaic acid
-
-
benzylidenebenzofuran-3(2H)-one
-
-
caffeic acid
-
10% inhibition at 0.1 mM
captopril
-
-
catechol
-
constituents from the formosan apple (Malus doumeri var. formosana), inhibition 78%, shows substantial cellular tyrosinase inhibitory activity at a concentration of 100 microM
chrysin
-
-
cinnamaldehyde
-
-
Cl-
-
enzyme added to substrate L-dopa, that is mixed with various concentrations of NaCl in 0.05 M sodium phosphate buffer, pH 7.0. When the NaCl concentration reaches to 600 mM, almost all the enzyme activity is abolished. Cl- induced inhibition of human tyrosinase, Cl- inhibits tyrosinase in a slope-parabolic competitive manner. TXM13 originated tyrosinase and the overexpressed human tyrosinase in HEK293 cells are inhibited. The inhibition by Cl- is reversible
cuminaldehyde
-
-
Cupferron
-
-
davanol
-
competitive, IC50: 0.017 mM
decahydro-2-naphthyl gallate
-
-
dopamine
-
10% inhibition at 0.1 mM
dopastin
-
-
ellagic acid
-
exhibits less tyrosinase-inhibitory activity than 3-hydroxyphloretin or catechol
ferulic acid
-
12% inhibition at 0.1 mM
flavone
-
-
geranyl gallate
-
-
glabrene
-
-
glabridin
-
-
glutathione
-
0.01 mM, 50% inhibition of recombinant enzyme
hydroquinone
Inhibitor protein from human skin
-
-
-
isoliquiritigenin
-
-
kaempferol
-
competitive, IC50: 0.230
kojic acid
L-ascorbic acid
-
as compared with two major effective cosmetic additives, arbutin and L-ascorbic acid, the polyvinylpyrrolidone (PVP)-wrapped fullerene derivative (Radical Sponge) shows the more marked depigmenting effect in human melanocytes or melanoma cells
L-mimosine
-
-
L-phenylalanine
-
8.34 mM, 50% inhibition of recombinant enzyme
Lactic acid
-
3.73 mM, 50% inhibition of recombinant enzyme
luteolin
-
-
luteolin 7-O-glucoside
-
-
Methimazole
-
-
morin
-
competitive, IC50: 2.320 mM
N-(4-coumaroyl)serotonin
-
isolated from safflower, Carthamus tinctorius L.
N-caffeoylserotonin
-
55% inhibition at 0.1 mM
N-dihydrocaffeoyltyramine
-
complete inhibition at 0.1 mM
N-feruloylserotonin
-
isolated from safflower, Carthamus tinctorius L.
N-protocatechuoylserotonin
-
43% inhibition at 0.1 mM
N-[2-(3,4-dihydroxyphenyl)ethyl]-3-(4-hydroxy-3-methoxyphenyl)propanamide
-
42% inhibition at 0.1 mM
phloretin
-
-
phloridzin
-
-
pinosylvin
-
inhibition of 32%
polyvinylpyrrolidone (PVP)-wrapped fullerene derivative
-
inhibitory effect of the water-soluble polymer-wrapped derivative of fullerene, named Radical Sponge. As compared with two major effective cosmetic additives, arbutin and L-ascorbic acid, the polyvinylpyrrolidone (PVP)-wrapped fullerene derivative (Radical Sponge) shows the more marked depigmenting effect in human melanocytes or melanoma cells
-
protocatechuic acid
-
inhibition of 34%
quercetin
RADSRADC
-
25% inhibition at 0.1 mM
rutin
-
-
trans-N-caffeoyltyramine
-
complete inhibition at 0.1 mM
trans-N-dihydro-p-hydroxycinnamoyltyramine
-
complete inhibition at 0.1 mM
tropolone
-
-
tyramine
-
23% inhibition at 0.1 mM
YRSRKYSSWY
-
35% inhibition at 0.1 mM
additional information
-
ACTIVATING COMPOUND
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
2-morpholinoethyl (E)-3-(3,4-dihydroxyphenyl)acrylate
a caffeic acid-4-(2-hydroxyethyl) morpholine ester, increases tyrosinase activity in M14 cells in a dose-dependent manner
3-morpholinopropyl (E)-3-(3,4-dihydroxyphenyl)acrylate
a caffeic acid-4-(2-hydroxyethyl) morpholine ester, increases tyrosinase activity in M14 cells in a dose-dependent manner
membrane-associated transporter protein
-
MATP, encoded by gene SLC45A2, regulates melanosomal pH and influences tyrosinase activity, mechanism modeling, overview. The SLC45A2 transcript is highly expressed in human melanoma cells and primary melanocyte. Knockdown of MATP using siRNAs reduces melanin content and tyrosinase activity without any morphological change in melanosomes or the expression of melanogenesis-related proteins, and lowers the the melanosomal pH. The reduced tyrosinase activity in MATP-knockdown cells is due to improper copper binding to tyrosinase under the acidic conditions in melanosomes and that the acidic conditions are due to MATP deletion
-
additional information
-
UVA induced oxidative stress is considered to promote melanogenesis and serious skin damage. UVA-induced reactive oxygen species (ROS), ROS causes tyrosinase gene transcription
-
KM VALUE [mM]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
19
3,4-dihydroxyphenylacetic acid
recombinant enzyme, pH 7.2, 37°C
2.5
4-methylcatechol
recombinant enzyme, pH 7.2, 37°C
0.6
4-tert-butylcatechol
recombinant enzyme, pH 7.2, 37°C
32
catechol
recombinant enzyme, pH 7.2, 37°C
16
dopamine
recombinant enzyme, pH 7.2, 37°C
0.34
L-Dopa
recombinant enzyme, pH 7.2, 37°C
1.9
L-dopa methyl ester
recombinant enzyme, pH 7.2, 37°C
58
L-isoproterenol
recombinant enzyme, pH 7.2, 37°C
0.22
L-tyrosine
recombinant enzyme, pH 7.2, 37°C
0.36 - 0.49
L-Dopa
0.17
L-tyrosine
-
recombinant enzyme
additional information
additional information
-
TURNOVER NUMBER [1/s]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
5.9
3,4-dihydroxyphenylacetic acid
recombinant enzyme, pH 7.2, 37°C
12
4-methylcatechol
recombinant enzyme, pH 7.2, 37°C
20.5
4-tert-butylcatechol
recombinant enzyme, pH 7.2, 37°C
44
catechol
recombinant enzyme, pH 7.2, 37°C
61
dopamine
recombinant enzyme, pH 7.2, 37°C
38.1
L-Dopa
recombinant enzyme, pH 7.2, 37°C
57
L-dopa methyl ester
recombinant enzyme, pH 7.2, 37°C
2.28
L-isoproterenol
recombinant enzyme, pH 7.2, 37°C
2.6
L-tyrosine
recombinant enzyme, pH 7.2, 37°C
Ki VALUE [mM]
INHIBITOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
0.0317
(Z)-2-(4-hydroxybenzylidene)-4-hydroxybenzofuran-3(2H)-one
-
-
0.0384
(Z)-2-(4-hydroxybenzylidene)-6-hydroxybenzofuran-3(2H)-one
-
-
0.038
(Z)-4,6-dihydroxy-2-(4-hydroxybenzylidene)benzofuran-3(2H)-one
-
-
0.007895
2-acetylamino-1,3,4-thiadiazole-5-sulfonamide
-
pH 6.8, 25°C
17 - 38.9
Cl-
0.01684
kojic acid
-
pH 6.8, 25°C
IC50 VALUE [mM]
INHIBITOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
1.85
(S)-imperanene
Homo sapiens
-
nearly as effective as arbutin
0.035
3-cymene
Homo sapiens
-
competitive, IC50: 0.035 mM
0.0006 - 0.032
3-hydroxyphloretin
0.03
3-hydroxyphlorizin
Homo sapiens
-
the effect of the formosan apple constituents on hydroxyl radical-scavenging activity
1.43 - 3
arbutin
0.0011 - 0.022
catechol
0.045
chrysin
Homo sapiens
-
the effect of the formosan apple constituents on hydroxyl radical-scavenging activity
155 - 164
Cl-
0.017
davanol
Homo sapiens
-
competitive, IC50: 0.017 mM
0.034
dillapiole
Homo sapiens
-
competitive, IC50: 0.034 mM
2.32
morin
Homo sapiens
-
competitive, IC50: 2.320 mM
0.0008
phloretin
Homo sapiens
-
the effect of the formosan apple constituents on hydroxyl radical-scavenging activity. Phloretin, quercetin, 3-hydroxyphloretin, catechol, and pinosylvin have the strongest hydroxyl radical-scavenging properties
0.087
phloridzin
Homo sapiens
-
the effect of the formosan apple constituents on hydroxyl radical-scavenging activity
0.0025
pinosylvin
Homo sapiens
-
the effect of the formosan apple constituents on hydroxyl radical-scavenging activity, phloretin, quercetin, 3-hydroxyphloretin, catechol, and pinosylvin have the strongest hydroxyl radical-scavenging properties
0.042
protocatechuic acid
Homo sapiens
-
the effect of the formosan apple constituents on hydroxyl radical-scavenging activity
0.0012 - 0.07
quercetin
0.08
rutin
Homo sapiens
-
the effect of the formosan apple constituents on hydroxyl radical-scavenging activity
SPECIFIC ACTIVITY [µmol/min/mg]
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
350.02
purified recombinant wild-type intra-melanosomal domain, pH 7.4, 37°C
0.228
-
tyrosine hydroxylation
26
-
recombinant enzyme
pH OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
6.8
assay at
7.2
assay at
6.8
-
assay at
7
-
assay at
pH RANGE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
6.5 - 8.5
-
less than 50% activity below pH 6.5 and above pH 8.5, L-dopa oxidation, recombinant enzyme
TEMPERATURE OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
30
assay at
25
-
in vitro assay at
50
-
L-dopa oxidation, recombinant enzyme
ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
SOURCE TISSUE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
SOURCE
-
-
Manually annotated by BRENDA team
-
-
Manually annotated by BRENDA team
-
human normal epidermis melanocytes
Manually annotated by BRENDA team
-
prepared from the TXM13 melanotic cells as well as from cells that had undergone gene transfection
Manually annotated by BRENDA team
LOCALIZATION
ORGANISM
UNIPROT
COMMENTARY hide
GeneOntology No.
LITERATURE
SOURCE
-
The immunocytochemistry shows that the ectopic tyrosinase is located in the cytoplasm, it is propably the membrane-bounded form since no detection of enzyme activity with the soluble solution without Triton X-100 is possible, nor is it found in Western blotting
Manually annotated by BRENDA team
additional information
GENERAL INFORMATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
malfunction
metabolism
physiological function
malfunction
physiological function
additional information
UNIPROT
ENTRY NAME
ORGANISM
NO. OF AA
NO. OF TRANSM. HELICES
MOLECULAR WEIGHT[Da]
SOURCE
SEQUENCE
LOCALIZATION PREDICTION?
TYRO_HUMAN
529
1
60393
Swiss-Prot
Secretory Pathway (Reliability: 1)
PDB
SCOP
CATH
UNIPROT
ORGANISM
MOLECULAR WEIGHT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
66000
-
x * 66000, recombinant enzyme, SDS-PAGE
66700
SUBUNIT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
monomer
x * 57000, recombinant enzyme, SDS-PAGE
monomer
-
1 * 66700
additional information
POSTTRANSLATIONAL MODIFICATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
glycoprotein
glycoprotein
PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
N111Q
glycosylation site is required for recognition by individual T cell clones
N161Q
similar properties as wild-type
N230Q
similar properties as wild-type
N290Q
similar properties as wild-type
N337Q
glycosylation site is required for recognition by individual T cell clones
N371Q
glycosylation site is required for recognition by individual T cell clones
N86Q
glycosylation site is required for recognition by individual T cell clones
P406L
a phenotype OCA1A-related mutant, inactive mutant
R402Q
a phenotype OCA1A-related mutant, inactive mutant
R422Q
a phenotype OCA1A-related mutant, inactive mutant
R422W
a phenotype OCA1A-related mutant, inactive mutant
R77Q
a phenotype OCA1A-related mutant, inactive mutant
T373K
a phenotype OCA1A-related mutant, inactive mutant
N111Q
-
mutation in potential N-glycosylation site, 95% of wild-type L-dopa oxidase activity
N111Q/N337Q
-
mutations in potential N-glycosylation site, 95% of wild-type L-dopa oxidase activity
N111Q/N337Q/N371Q
-
mutations in potential N-glycosylation site, no L-dopa oxidase activity
N111Q/N371Q
-
mutations in potential N-glycosylation site, 59% of wild-type L-dopa oxidase activity
N337Q
-
mutation in potential N-glycosylation site, 93% of wild-type L-dopa oxidase activity
N337Q/N3711Q
-
mutations in potential N-glycosylation site, 37% of wild-type L-dopa oxidase activity
N371Q
-
mutation in potential N-glycosylation site, 64% of wild-type L-dopa oxidase activity
N86Q
-
mutation in potential N-glycosylation site, 70% of wild-type L-dopa oxidase activity
N86Q/N111Q
-
mutations in potential N-glycosylation site, 68% of wild-type L-dopa oxidase activity
N86Q/N111Q/N337Q
-
mutations in potential N-glycosylation site, no L-dopa oxidase activity
N86Q/N111Q/N337Q/N371Q
-
mutations in potential N-glycosylation site, no L-dopa oxidase activity
N86Q/N111Q/N371Q
-
mutations in potential N-glycosylation site, no L-dopa oxidase activity
N86Q/N337Q
-
mutations in potential N-glycosylation site, 35% of wild-type L-dopa oxidase activity
N86Q/N337Q/N371Q
-
mutations in potential N-glycosylation site, no L-dopa oxidase activity
N86Q/N371Q
-
mutations in potential N-glycosylation site, 30% of wild-type L-dopa oxidase activity, contains at least 3 times less copper than wild-type
additional information
STORAGE STABILITY
ORGANISM
UNIPROT
LITERATURE
-20°C, 0.02% bovine serum albumine, no loss of activity
-
PURIFICATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
recombinant His-tagged enzyme from Spdoptera frugiperda Sf9 cells by nickel affinity chromatography and gel filtration
recombinant His-tagged intra-melanosomal domain of wild-type tyrosinase and temperature-sensitive OCA1-related mutant R422Q from whole-insect Trichoplusia ni by nickel affinity chromatography, tag cleavage by TEV protease, dialysis, and two steps of gel filtration, 98.73% purity. The purified recombinant human tyrosinase is a soluble monomeric glycoprotein with an activity that mirrors the tyrosinase in vivo function
recombinant His-tagged intra-melanosomal domain wild-type and mutant variants OCA1A and OCA1B in Trichoplusia ni insect cells by nickel affinity chromatography, ultrafiltration, and gel filtration
ammonium sulfate, DEAE-cellulose, Sephadex G150, trypsin digestion, Sephadex G-150, DEAE-cellulose, partial purification
-
recombinant His-tagged enzyme, DEAE-Sephacel, Ni2+-affinity column
-
CLONED (Commentary)
ORGANISM
UNIPROT
LITERATURE
gene TYR, DNA and amino acid sequence determinatin and analysis, sequence comparisons, recombinant expression of His-tagged intra-melanosomal domain wild-type and mutant variants OCA1A and OCA1B in Trichoplusia ni insect cells using the baculovirus transfection method
recombinant expression of His-tagged intra-melanosomal domain of wild-type tyrosinase and temperature-sensitive OCA1-related mutant R422Q and in whole-insect Trichoplusia ni via transfection with baculovius
the wild-type sequence coding for the enzyme is obtained by restriction digestion of the entire cDNA sequence, subcloning in Escherichia coli H10Bac, and recombinant expression of His-tagged enzyme in Spdoptera frugiperda Sf9 cells via the baculovirus transfection method
expression in Escherichia coli
-
expression of wild-type, N86Q, N111Q, N337Q, N371Q and several double and triple mutant enzymes derived from this single mutants in CHO cells
-
tyrosinase gene transfection, by calcium-phosphate precipitation method, into HEK293 cell significantly down-regulates the expression levels of solute carrier family 12, member 4 and 7, which are known to be Cl- transporters. Observation of significant pigmentation of the HEK293 cells
-
RENATURED/Commentary
ORGANISM
UNIPROT
LITERATURE
all proteins including hTyrCtr and OCA1B-related mutant variants are a subjected to equilibrium unfolding/refolding using 0.001 mM protein in 10 mM phosphate buffer, pH 7.4, 5 h at 8 M urea, followed by dilution with 10 mM phosphate buffer, pH 7.4 to 0-8 M urea and incubated for 24 h at room temperature
APPLICATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
drug development
pharmacology
-
results indicate that the polyvinylpyrrolidone (PVP)-wrapped fullerene derivative (Radical Sponge) could be expected for its wide-ranged application as a whitening cosmetic material
REF.
AUTHORS
TITLE
JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
Vijayan, E.; Husain, I.; Ramaiah, A.; Madan, N.C.
Purification of human skin tyrosinase and its protein inhibitor: properties of the enzyme and the mechanism of inhibition by protein
Arch. Biochem. Biophys.
217
738-747
1982
Homo sapiens
Manually annotated by BRENDA team
Nishioka, K.
Particulate tyrosinase of human malignant melanoma. Solubilization, purification following trypsin treatment, and characterization
Eur. J. Biochem.
85
137-146
1978
Homo sapiens
Manually annotated by BRENDA team
Kwon, B.S.; Haq, A.K.; Pomerantz, S.H.; Halaban, R.
Isolation and sequence of a cDNA clone for human tyrosinase that maps at the mouse c-albino locus [published erratum appears in Proc Natl Acad Sci U S A 1988 Sep;85(17):6352]
Proc. Natl. Acad. Sci. USA
84
7473-7477
1987
Homo sapiens
Manually annotated by BRENDA team
Kong, K.H.; Park, S.Y.; Hong, M.P.; Cho, S.H.
Expression and characterization of human tyrosinase from a bacterial expression system
Comp. Biochem. Physiol. B
125
563-569
2000
Homo sapiens
Manually annotated by BRENDA team
Branza-Nichita, N.; Negroiu, G.; Petrescu, A.J.; Garman, E.F.; Platt, F.M.; Wormald, M.R.; Dwek, R.A.; Petrescu, S.M.
Mutations at critical N-glycosylation sites reduce tyrosinase activity by altering folding and quality control
J. Biol. Chem.
275
8169-8175
2000
Homo sapiens
Manually annotated by BRENDA team
Housseau, F.; Moorthy, A.; Langer, D.A.; Robbins, P.F.; Gonzales, M.I.; Topalian, S.L.
N-linked carbohydrates in tyrosinase are required for its recognition by human MHC class II-restricted CD4+ T cells
Eur. J. Immunol.
31
2690-2701
2001
Homo sapiens (P14679), Homo sapiens
Manually annotated by BRENDA team
Okombi, S.; Rival, D.; Bonnet, S.; Mariotte, A.M.; Perrier, E.; Boumendjel, A.
Analogues of N-hydroxycinnamoylphenalkylamides as inhibitors of human melanocyte-tyrosinase
Bioorg. Med. Chem. Lett.
16
2252-2255
2006
Homo sapiens
Manually annotated by BRENDA team
Kim, Y.J.; Uyama, H.
Tyrosinase inhibitors from natural and synthetic sources: structure, inhibition mechanism and perspective for the future
Cell. Mol. Life Sci.
62
1707-1723
2005
Agaricus bisporus, Beta vulgaris, Homo sapiens, Neurospora crassa, Streptomyces glaucescens
Manually annotated by BRENDA team
Okombi, S.; Rival, D.; Bonnet,S.; Mariotte,A.M.; Perrier,E.; Boumendjel, A.
Discovery of benzylidenebenzofuran-3(2H)-one (aurones) as inhibitors of tyrosinase derived from human melanocytes
J. Med. Chem.
49
329-333
2006
Homo sapiens
Manually annotated by BRENDA team
Xiao, L.; Matsubayashi, K.; Miwa, N.
Inhibitory effect of the water-soluble polymer-wrapped derivative of fullerene on UVA-induced melanogenesis via downregulation of tyrosinase expression in human melanocytes and skin tissues
Arch. Dermatol. Res.
299
245-257
2007
Homo sapiens
Manually annotated by BRENDA team
Han, H.Y.; Lee, J.R.; Xu, W.A.; Hahn, M.J.; Yang, J.M.; Park, Y.D.
Effect of Cl- on tyrosinase: complex inhibition kinetics and biochemical implication
J. Biomol. Struct. Dyn.
25
165-171
2007
Homo sapiens
Manually annotated by BRENDA team
Takara, K.; Iwasaki, H.; Ujihara, K.; Wada, K.
Human tyrosinase inhibitor in rum distillate wastewater
J. Oleo Sci.
57
191-196
2008
Homo sapiens
Manually annotated by BRENDA team
Lin, Y.P.; Hsu, F.L.; Chen, C.S.; Chern, J.W.; Lee, M.H.
Constituents from the Formosan apple reduce tyrosinase activity in human epidermal melanocytes
Phytochemistry
68
1189-1199
2007
Agaricus bisporus, Homo sapiens
Manually annotated by BRENDA team
Yamazaki, Y.; Kawano, Y.; Yamanaka, A.; Maruyama, S.
N-[(dihydroxyphenyl)acyl]serotonins as potent inhibitors of tyrosinase from mouse and human melanoma cells
Bioorg. Med. Chem. Lett.
19
4178-4182
2009
Homo sapiens, Mus musculus
Manually annotated by BRENDA team
Abu Ubeid, A.; Zhao, L.; Wang, Y.; Hantash, B.M.
Short-sequence oligopeptides with inhibitory activity against mushroom and human tyrosinase
J. Invest. Dermatol.
129
2242-2249
2009
Agaricus bisporus, Homo sapiens
Manually annotated by BRENDA team
Olivares, C.; Solano, F.
New insights into the active site structure and catalytic mechanism of tyrosinase and its related proteins
Pigment Cell Melanoma Res.
22
750-760
2009
Gallus gallus, Homo sapiens, Mus musculus, Streptomyces castaneoglobisporus
Manually annotated by BRENDA team
Abbas, Q.; Raza, H.; Hassan, M.; Phull, A.R.; Kim, S.J.; Seo, S.Y.
Acetazolamide inhibits the level of tyrosinase and melanin an enzyme kinetic, in vitro, in vivo, and in silico studies
Chem. Biodivers.
14
e1700117
2017
Agaricus bisporus, Danio rerio, Homo sapiens
Manually annotated by BRENDA team
Dolinska, M.B.; Wingfield, P.T.; Sergeev, Y.V.
Purification of recombinant human tyrosinase from insect larvae infected with the baculovirus vector
Curr. Protoc. Protein Sci.
89
15.1-6.15.12
2017
Homo sapiens (P14679), Homo sapiens
Manually annotated by BRENDA team
Nokinsee, D.; Shank, L.; Lee, V.S.; Nimmanpipug, P.
Estimation of inhibitory effect against tyrosinase activity through homology modeling and molecular docking
Enzyme Res.
2015
262364
2015
Agaricus bisporus, Homo sapiens (P14679), Homo sapiens
Manually annotated by BRENDA team
Fogal, S.; Carotti, M.; Giaretta, L.; Lanciai, F.; Nogara, L.; Bubacco, L.; Bergantino, E.
Human tyrosinase produced in insect cells a landmark for the screening of new drugs addressing its activity
Mol. Biotechnol.
57
45-57
2015
Streptomyces antibioticus (P07524), Homo sapiens (P14679), Homo sapiens
Manually annotated by BRENDA team
Bin, B.H.; Bhin, J.; Yang, S.H.; Shin, M.; Nam, Y.J.; Choi, D.H.; Shin, D.W.; Lee, A.Y.; Hwang, D.; Cho, E.G.; Lee, T.R.
Membrane-associated transporter protein (MATP) regulates melanosomal pH and influences tyrosinase activity
PLoS ONE
10
e0129273
2015
Homo sapiens
Manually annotated by BRENDA team
Zheng, J.; Zhang, R.; Chen, Y.; Ye, X.; Chen, Q.; Shen, D.; Wang, Q.
Synthesis of caffeic acid ester morpholines and their activation effects on tyrosinase
Process Biochem.
62
91-98
2017
Agaricus bisporus, Homo sapiens (P14679)
-
Manually annotated by BRENDA team