Terpenoid metabolism in plastids. Localization of alpha-tocopherol synthesis in Capsicum chromoplasts [Capsicum annuum, peppers]

Terpenoid metabolism in plastids. Localization of alpha-tocopherol synthesis in Capsicum chromoplasts [Capsicum annuum, peppers]

The synthesis of α-tocopherol from 2,3-dimethylphytylquinol and S-adenosyl-L-methionine was achieved using Capsicum annuum fruit chromoplasts. The enzymes involved in the cyclization (2,3-dimethyl-phytylquinol cyclase) and methylation (S-adenosyl methionine:γ-tocopherol methyltransferase) are both l...

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Veröffentlicht in:Plant physiology (Bethesda) 1982-11, Vol.70 (5), p.1562-1563
Hauptverfasser: Camara, B, Bardat, F, Seye, A, D'Harlingue, A, Monéger, R
Format: Artikel
Sprache:eng
Schlagworte:
Chloroplasts
Chromoplasts
Lipids
Metabolism
Methylation
Plastids
Short Communications
Spinach
Terpenoids
Tocopherols
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Zusammenfassung:The synthesis of α-tocopherol from 2,3-dimethylphytylquinol and S-adenosyl-L-methionine was achieved using Capsicum annuum fruit chromoplasts. The enzymes involved in the cyclization (2,3-dimethyl-phytylquinol cyclase) and methylation (S-adenosyl methionine:γ-tocopherol methyltransferase) are both localized in the chromoplast membrane fraction (envelopes and/or a-chlorophyll lamellae), in contrast to the stroma fraction.
ISSN:0032-0889
1532-2548
DOI:10.1104/pp.70.5.1562