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Literature summary for 1.14.18.1 extracted from

  • Hristova, R.; Dolashki, A.; Voelter, W.; Stevanovic, S.; Dolashka-Angelova, P.
    o-Diphenol oxidase activity of molluscan hemocyanins (2008), Comp. Biochem. Physiol. B, 149, 439-446.
    View publication on PubMed

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.77
-
L-Dopa
-
Helix vulgaris
2.86
-
diphenol the Km value is very close to those of Helix pomatia and Sepia officinalis Hcs, but several times higher compared to those of Rapana and Octopus Hcs Helix vulgaris
23.81
-
o-Diphenol Rapana venosa RvH2 (subunits) Rapana venosa
28.57
-
o-Diphenol Rapana venosa native (didecamers) Rapana venosa

Organism

Organism UniProt Comment Textmining
Helix vulgaris
-
garden snail
-
Rapana venosa
-
marine snail
-

Purification (Commentary)

Purification (Comment) Organism
-
Rapana venosa
-
Helix vulgaris

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
diphenol + O2
-
Helix vulgaris ?
-
r
L-dopa + 1/2 O2
-
Rapana venosa L-dopaquinone + H2O
-
?
L-dopa + 1/2 O2
-
Helix vulgaris L-dopaquinone + H2O
-
?
o-diphenol + 1/2 O2
-
Rapana venosa ?
-
?
o-diphenol + 1/2 O2
-
Helix vulgaris ?
-
?

Subunits

Subunits Comment Organism
dimer the dimers shows both, diphenol and L-Dopa activity due to a more open active sites of the enzyme and better access of the substrates Helix vulgaris

Synonyms

Synonyms Comment Organism
o-diphenol oxidase
-
Rapana venosa
o-diphenol oxidase
-
Helix vulgaris
tyrosinase
-
Rapana venosa
tyrosinase
-
Helix vulgaris

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
25
-
assay at Helix vulgaris

Turnover Number [1/s]

Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
1.8
-
L-Dopa
-
Helix vulgaris
2.66
-
o-Diphenol Rapana venosa native (didecamers) Rapana venosa
3.5
-
o-Diphenol Rapana venosa RvH2 (subunits) Rapana venosa
4.48
-
diphenol
-
Helix vulgaris

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6.8
-
assay at Helix vulgaris