Alicyclic acid metabolism in plants 3. Fate of 14C-shikimate and 14C-quinate in mung bean plants |
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Authors: | MINAMIKAWA, TAKAO YOSHIDA, SEIICHI HASEGAWA, MASAO |
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Affiliation: | Department of Biology, Tokyo Metropolitan University Fukazawa, Setagaya-ku, Tokyo, Japan |
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Abstract: | Young mung bean plants (Phaseolus mungo) were exposed to 14C-shikimateor 14C-quinate in the light. After 8 or 23.5 hr of incubationat 25°C, radioactivities in free and bound amino acids,organic acids, soluble and insoluble carbohydrates, ether-solublefraction and lignin were determined. Shikimic and quinic acidswere separated by the combined use of paper-chromatography andcolumn chromatography. Specific activity of formed quinate orshikimate was only slightly lower than that of fed shikimateor quinate. Specific activities of phenylalanine, tyrosine andbound tryptophan were high as compared with those of non-aromaticamino acids. Discussion is focused upon the interconversionbetween shikimate and quinate, and their roles in the biosynthesisof aromatic amino acids. (Received November 15, 1968; ) |
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