Studies on the induction of cinnamic acid 4-hydroxylase in potato tuber.
Indian J Biochem Biophys
;
1991 Jun; 28(3): 193-7
Article
Dans Anglais
| IMSEAR
| ID: sea-28876
ABSTRACT
The change in activity of cinnamic acid 4-hydroxylase (CA4H) in potato parenchyma tissue exposed to various conditions has been examined. Maximum induction of CA4H activity was obtained at 18 hr of incubation. Though CA4H induction can occur in dark, over 100% increase in enzyme activity was obtained on exposure of the tissue to light. Actinomycin D and cycloheximide inhibited the induction process. Mn2+, though known to cause an induction of CA4H in Jerusalem Artichoke, strongly inhibited potato CA4H induction. Dithiothreitol enhanced the CA4H activity due to either activation or protection of the enzyme. CA4H induction was significantly regulated at very low concentrations of trans-cinnamate and paracoumarate.
Texte intégral:
Disponible
Indice:
IMSEAR (Asie du Sud-Est)
Sujet Principal:
Solanum tuberosum
/
Cinétique
/
Induction enzymatique
/
Cycloheximide
/
Cytochrome P-450 enzyme system
/
Dactinomycine
/
Obscurité
/
Dithiothréitol
/
Trans-cinnamate 4-monooxygenase
/
Mixed function oxygenases
langue:
Anglais
Texte intégral:
Indian J Biochem Biophys
Année:
1991
Type:
Article
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