Quinone and pigment composition of chloroplasts and quantasome aggregates from Spinacia Oleracea
✍ Scribed by Hartmut K. Lichtenthaler; Melvin Calvin
- Publisher
- Elsevier Science
- Year
- 1964
- Weight
- 689 KB
- Volume
- 79
- Category
- Article
- ISSN
- 0926-6577
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✦ Synopsis
Quantasome aggregates isolated from spinach chloroplasts have the same pigment and quinone composition as do whole chloroplasts. The pigments comprise chlorophylls a and b, violaxanthin, lutein, neoxanthin and /~-carotene as the main components. The quinone compounds include plastoquinone A and B, phylloquinone (vitamin K1), a-tocopherylquinone and a-tocopherol. Pigments and quinones together constitute about 27% of the quantasome lipids. Quinones and total carotenoids contribute equally to the lipid portion. The data described here lend further support to the assumption that the quantasome represents a functional photosynthetic unit.