Fat Metabolism in Higher Plants: XLV. Some Factors Regulating Fatty Acid Synthesis by Isolated Spinach Chloroplasts 1

AUTOR(ES)

Givan, Curtis V.

RESUMO

In the biosynthesis of fatty acids from 1-14C-acetate by intact spinach chloroplasts, ATP and Triton X-100 exert opposing effects on the conversion of palmitic acid to stearic acid; thus, ATP decreases the conversion and Triton X-100 increases the conversion. Changes in the availability of photosynthetically generated reduced nicotinamide adenine dinucleotide phosphate apparently does not markedly affect the C16-C18 ratio. Various H2O2-generating systems, such as viologen dyes, inhibit oleate synthesis from acetate and cause stearate to accumulate. Catalase partially reverses the effect of these days.

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