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Literature summary for 1.14.18.1 extracted from

  • Liu, N.; Zhang, T.; Wang, Y.J.; Huang, Y.P.; Ou, J.H.; Shen, P.
    A heat inducible tyrosinase with distinct properties from Bacillus thuringiensis (2004), Lett. Appl. Microbiol., 39, 407-412.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
EDTA 200-400 mM, activates Bacillus thuringiensis
SDS activates Bacillus thuringiensis

Inhibitors

Inhibitors Comment Organism Structure
alpha,alpha'-dipyridyl 5 mM, 44% inhibition Bacillus thuringiensis
diethyldithiocarbamate 0.001 mM, 10% inhibition Bacillus thuringiensis
EDTA below 2 mM, 66% inhibition at 0.5 mM, 28% inhibition at 1 mM, no inhibition at 2 mM Bacillus thuringiensis
p-phenanthroline 5 M, complete inhibition Bacillus thuringiensis
Phenylthiourea 0.001 mM, 26% inhibition Bacillus thuringiensis
Sodium fluoride 5 mM, complete inhibition Bacillus thuringiensis
Triton X-100 0.5% 87% inhibition Bacillus thuringiensis

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.563
-
L-Tyr pH 8.5, 42°C Bacillus thuringiensis
0.768
-
L-Dopa pH 8.5, 42°C Bacillus thuringiensis
0.892
-
dopamine pH 8.5, 42°C Bacillus thuringiensis
34.05
-
catechol pH 8.5, 42°C Bacillus thuringiensis

Metals/Ions

Metals/Ions Comment Organism Structure
Cu2+ 10 mM, increases activity. Copper-containing enzyme Bacillus thuringiensis
Mg2+ 10 mM, increases activity Bacillus thuringiensis

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
14000
-
x * 14000, SDS-PAGE Bacillus thuringiensis

Organism

Organism UniProt Comment Textmining
Bacillus thuringiensis
-
subsp. Kurstaki
-

Purification (Commentary)

Purification (Comment) Organism
-
Bacillus thuringiensis

Storage Stability

Storage Stability Organism
4°C, 40% loss of activity after 30 days Bacillus thuringiensis

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3,4-dihydroxymandelic acid + O2 9% of the activity with L-dopa Bacillus thuringiensis ?
-
?
3,4-dihydroxyphenylacetic acid + O2 12% of the activity with L-dopa Bacillus thuringiensis ?
-
?
4-methyl catechol + O2 5% of the activity with L-dopa Bacillus thuringiensis 4-methyl-o-benzoquinone + H2O
-
?
catechol + 1/2 O2 24% of the activity with L-dopa Bacillus thuringiensis 1,2-benzoquinone + H2O
-
?
dopamine + 1/2 O2 96% of the activity with L-dopa Bacillus thuringiensis dopamine quinone + H2O
-
?
L-dopa + 1/2 O2
-
Bacillus thuringiensis L-dopaquinone + H2O
-
?
L-Tyr + O2 + AH2 10% of the activity with L-dopa Bacillus thuringiensis L-dopa + H2O + A
-
?
resorcinol + O2 3% of the activity with L-dopa Bacillus thuringiensis ?
-
?

Subunits

Subunits Comment Organism
? x * 14000, SDS-PAGE Bacillus thuringiensis

Synonyms

Synonyms Comment Organism
tyrosinase
-
Bacillus thuringiensis

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
75
-
-
Bacillus thuringiensis

Temperature Range [°C]

Temperature Minimum [°C] Temperature Maximum [°C] Comment Organism
55 85 55°C: about 75% of maximal activity, 85°C: about 80% of maximal activity Bacillus thuringiensis

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
85
-
10 min, 25% loss of activity Bacillus thuringiensis
100
-
10 min, 30% loss of activity. Complete loss of activity after 15 min Bacillus thuringiensis

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
9
-
-
Bacillus thuringiensis

pH Range

pH Minimum pH Maximum Comment Organism
8 9.5 pH 8.0: about 30% of maximal activity, pH 9.0: maximal activity, pH 9.5: no activity Bacillus thuringiensis