Inhibition of geranylgeranyl diphosphate synthesis in in vitro systems

Steiger, Andrea; Mitzka-Schnabel, Ursula; Rau, Werner; Soll, Jürgen and Rüdiger, Wolfhart (1985): Inhibition of geranylgeranyl diphosphate synthesis in in vitro systems. In: Phytochemistry, Vol. 24, No. 4: pp. 739-743

Abstract

The incorporation of [14C]mevalonate and [14C]isopentenyl diphosphate into geranylgeranyl diphosphate was investigated in in vitro systems from Cucurbita pepo (pumpkin) endosperm and from Avena sativa etioplasts. Mevalonate incorporation was effectively inhibited in the pumpkin system by geranylgeranyl diphosphate and geranylgeranyl monophosphate but less effectively by phytyl diphosphate or inorganic diphosphate. Membrane lipids, geranyllinalool, or lecithin enhanced mevalonate incorporation in the Cucurbita system. Incorporation of isopentenyl diphosphate was also enhanced by lecithin and inhibited by geranylgeranyl diphosphate in the Cucurbita system. No lipid enhancement was found in the Avena system; inhibition by GGPP required a much higher GGPP concentration than in the Cucurbita system.

• Item Type: Journal article
• Keywords: Avena sativa, Gramineae; Cucurbita pepo, Cucurbitaceae; etiolated seedlings; endosperm; mevalonic acid; isopentenyl diphosphate
• Faculties: Biology
• Subjects: 500 Science > 570 Life sciences; biology