doi: 10.1111/j.1432-1033.1982.tb06863.x.
Sites of biosynthesis of carotenoids in Capsicum chromoplasts
- PMID: 7140767
- DOI: 10.1111/j.1432-1033.1982.tb06863.x
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Sites of biosynthesis of carotenoids in Capsicum chromoplasts
Eur J Biochem.
1982 Oct.
Free article
Abstract
Capsicum chromoplasts incubated with isopentenyl diphosphate actively synthesize carotenoids. The enzymes involved in these reactions are compartmentalized: the stroma is the site of phytoene synthesis, the first colourless carotenoid, while desaturation and cyclization of the latter leading to coloured carotenoids, occur in the membrane fraction (chromoplast envelope + achlorophyll lamellae derived in part from the inner envelope membrane). Phytoene synthetase could be used as a marker of chromoplast stroma.
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