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Literature summary for 2.4.1.127 extracted from

  • Martinkus, C.; Croteau, R.
    Metabolism of monoterpenes. Evidence for compartmentation of L-menthone metabolism in peppermint (Mentha piperita) leaves (1981), Plant Physiol., 68, 99-106.
    View publication on PubMedView publication on EuropePMC

Activating Compound

Activating Compound Comment Organism Structure
2-mercaptoethanol without addition 73% decrease of activity, suggesting a thiol function necessary for activity Mentha x piperita

Inhibitors

Inhibitors Comment Organism Structure
Ca2+ 5 mM, strong Mentha x piperita
CdCl2 strong Mentha x piperita
Co2+ 5 mM, strong Mentha x piperita
HgCl2 strong Mentha x piperita
Ni2+ 5 mM, strong Mentha x piperita
p-hydroxymercuribenzoate strong Mentha x piperita
Zn2+ 5 mM, strong Mentha x piperita

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.048
-
D-neomenthol
-
Mentha x piperita
0.059
-
L-menthol
-
Mentha x piperita
0.2
-
UDPglucose reaction with D-neomenthol Mentha x piperita
0.25
-
UDPglucose reaction with L-menthol Mentha x piperita

Metals/Ions

Metals/Ions Comment Organism Structure
Mg2+ 20 mM, about 30% stimulation Mentha x piperita
MnCl2 slight stimulation Mentha x piperita

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
46000
-
gel filtration Mentha x piperita

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
UDPglucose + L-menthol Mentha x piperita enzyme is involved in metabolism of L-menthone UDP + L-menthyl-beta-D-glucoside
-
?

Organism

Organism UniProt Comment Textmining
Mentha x piperita
-
cv. Black Mitcham
-

Purification (Commentary)

Purification (Comment) Organism
partial Mentha x piperita

Source Tissue

Source Tissue Comment Organism Textmining
leaf
-
Mentha x piperita
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
UDPglucose + D-neomenthol
-
Mentha x piperita UDP + D-neomenthyl-beta-D-glucoside
-
?
UDPglucose + L-menthol
-
Mentha x piperita UDP + L-menthyl-beta-D-glucoside
-
?
UDPglucose + L-menthol enzyme is involved in metabolism of L-menthone Mentha x piperita UDP + L-menthyl-beta-D-glucoside
-
?

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.3
-
70 mM Tris-sodium maleate buffer Mentha x piperita
7.7
-
70 mM Na-phosphate buffer Mentha x piperita

pH Range

pH Minimum pH Maximum Comment Organism
6 8.5 about 50% of maximal activity at pH 6.0 and pH 8.5, 70 mM Tris-sodium maleate buffer Mentha x piperita
7.3 8.3 about 50% of maximal activity at pH 7.3 and pH 8.3, 70 mM Na-phosphate buffer Mentha x piperita