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Literature summary for 1.23.5.1 extracted from

  • Frommolt, R.; Goss, R.; Wilhelm, C.
    The de-epoxidase and epoxidase reactions of Mantoniella squamata (Prasinophyceae) exhibit different substrate-specific reaction kinetics compared to spinach (2001), Planta, 213, 446-456.
    View publication on PubMed
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KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.0016
-
 antheraxanthin pH 5.2, 29°C Spinacia oleracea
0.0033
-
 violaxanthin pH 5.2, 29°C Spinacia oleracea
0.0033
-
 violaxanthin pH 5.2, 29°C Mantoniella squamata
0.006
-
 antheraxanthin pH 5.2, 29°C Mantoniella squamata

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
antheraxanthin + ascorbate Spinacia oleracea
-
 zeaxanthin + dehydroascorbate + H2O
-
 ?
antheraxanthin + ascorbate Mantoniella squamata the violaxanthin/antheraxanthin cycle in Mantionella is caused by the interaction of the slow second de-epoxidation step and the relatively fast epoxidation of antheraxanthin to violaxanthin zeaxanthin + dehydroascorbate + H2O
-
 ?
violaxanthin + ascorbate Spinacia oleracea
-
 antheraxanthin + dehydroascorbate + H2O
-
 ?
violaxanthin + ascorbate Mantoniella squamata
-
 antheraxanthin + dehydroascorbate + H2O
-
 ?

Organism

Organism UniProt Comment Textmining
Mantoniella squamata
-
-
-
Spinacia oleracea
-
-
-

Reaction

Reaction Comment Organism Reaction ID
antheraxanthin + L-ascorbate = zeaxanthin + L-dehydroascorbate + H2O
-
 Mantoniella squamata
a
violaxanthin + L-ascorbate = antheraxanthin + L-dehydroascorbate + H2O (1a) Mantoniella squamata
a

Source Tissue

Source Tissue Comment Organism Textmining
leaf
-
 Spinacia oleracea
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
antheraxanthin + ascorbate
-
 Spinacia oleracea zeaxanthin + dehydroascorbate + H2O
-
 ?
antheraxanthin + ascorbate the violaxanthin/antheraxanthin cycle in Mantionella is caused by the interaction of the slow second de-epoxidation step and the relatively fast epoxidation of antheraxanthin to violaxanthin Mantoniella squamata zeaxanthin + dehydroascorbate + H2O
-
 ?
violaxanthin + ascorbate
-
 Spinacia oleracea antheraxanthin + dehydroascorbate + H2O
-
 ?
violaxanthin + ascorbate
-
 Mantoniella squamata antheraxanthin + dehydroascorbate + H2O
-
 ?

Synonyms

Synonyms Comment Organism
VDE
-
 Mantoniella squamata