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Literature summary for 1.14.18.1 extracted from

  • Pomerantz, S.H.; Murthy, V.V.
    Purification and properties of tyrosinases from Vibrio tyrosinaticus (1974), Arch. Biochem. Biophys., 160, 73-82.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
CN-
-
Vibrio tyrosinaticus
diethyldithiocarbamate 10 mM, 80% inactivation, activity is restored by incubation with 0.01 mM Cu2+, Mn2+, Cd2+ or Fe2+ Vibrio tyrosinaticus

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
2.2
-
D-tyrosine isoenzyme A Vibrio tyrosinaticus
3.1
-
L-tyrosine isoenzyme A and B Vibrio tyrosinaticus
36
-
L-Dopa isoenzyme A Vibrio tyrosinaticus
67
-
L-Dopa isoenzyme B Vibrio tyrosinaticus

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
38500
-
isoenzyme B, gel filtration Vibrio tyrosinaticus
40000
-
isoenzyme A, gel filtration Vibrio tyrosinaticus

Organism

Organism UniProt Comment Textmining
Vibrio tyrosinaticus
-
2 isoenzymes
-

Purification (Commentary)

Purification (Comment) Organism
-
Vibrio tyrosinaticus

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
46
-
isoenzyme A Vibrio tyrosinaticus
137
-
isoenzyme B Vibrio tyrosinaticus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2 L-dopa + O2
-
Vibrio tyrosinaticus 2 dopaquinone + 2 H2O
-
r
D-tyrosine + O2
-
Vibrio tyrosinaticus ?
-
r
L-dopa + 1/2 O2
-
Vibrio tyrosinaticus dopaquinone + H2O
-
r
L-DOPA + O2
-
Vibrio tyrosinaticus dopaquinone + H2O
-
r
L-tyrosine + O2
-
Vibrio tyrosinaticus dopaquinone + H2O
-
r
L-tyrosine + O2
-
Vibrio tyrosinaticus L-DOPA + H2O
-
r

Turnover Number [1/s]

Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
75
-
L-Dopa isoenzyme A Vibrio tyrosinaticus
90
-
L-Dopa isoenzyme B Vibrio tyrosinaticus
100
-
L-tyrosine isoenzyme A and B Vibrio tyrosinaticus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6.6 7.8
-
Vibrio tyrosinaticus

pH Range

pH Minimum pH Maximum Comment Organism
5.7 7.8 pH 5.7: 50% of maximal activity, pH 6.6-7.8: optimum Vibrio tyrosinaticus

Ki Value [mM]

Ki Value [mM] Ki Value maximum [mM] Inhibitor Comment Organism Structure
0.095
-
CN- competitive vs. tyrosine Vibrio tyrosinaticus
0.267
-
diethyldithiocarbamate noncompetitive vs. tyrosine Vibrio tyrosinaticus