Chlorophyll biosynthesis and assembly into chlorophyll-protein complexes in isolated developing chloroplasts
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چکیده
منابع مشابه
Chlorophyll biosynthesis and assembly into chlorophyll-protein complexes in isolated developing chloroplasts.
Isolated developing plastids from greening cucumber cotyledons or from photoperiodically grown pea seedlings incorporated (14)C-labeled 5-aminolevulinic acid (ALA) into chlorophyll (Chl). Incorporation was light dependent, enhanced by S-adenosylmethionine, and linear for 1 hr. The in vitro rate of Chl synthesis from ALA was comparable to the in vivo rate of Chl accumulation. Levulinic acid and ...
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The photosynthetic apparatus is reorganized during acclimation to various light environments. During adaptation of plants grown under a low-light to high-light environment, the light-harvesting chlorophyll a/b-protein complexes decompose concomitantly with an increase in the core complex of photosystem II. To study the mechanisms for reorganization of photosystems, the assembly of chlorophyll w...
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Developing chloroplasts were incubated under conditions previously shown to induce protochlorophyll and chlorophyll biosynthesis, as well as chloroplast maintenance and partial differentiation in vitro. In the presence of air, delta-aminolevulinic acid, coenzyme A, glutathione, potassium phosphate, methyl alcohol, magnesium, nicotinamide adenine dinucleotide, and adenosine triphosphate, microgr...
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A leaf with 70 million cells houses .v5 x 109 chloroplasts, each containing m600 million molecules of chlorophyll (Simpson and Knoetzel, 1995). These 10’8 chlorophyll molecules, all of which are bound to proteins of the photosynthetic membranes, harvest the sunlight. Approximately 250 to 300 of them transfer the absorbed light energy through neighboring pigments to the “special pair” chlorophyl...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1985
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.82.16.5370