Glycine-serine transformation in the photosynthetic bacterium Chromatium vinosum |
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Authors: | Sado, Mamoru Asami, Sumio Nishimura, Mikio Akazawa, T. |
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Affiliation: | Research Institute for Biochemical Regulation, School of Agriculture, Nagoya University Chikusa, Nagoya 464, Japan |
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Abstract: | The metabolic transformation of glycine into serine in the photosyntheticbacterium Chromatium vinosum was accompanied by the evolutionof CO2 due to decarboxylation of glycine. Isonicotinylhydrazideinhibited both 14CO2 evolution and the formation of 14C-serinefrom 14C-glycine. The results indicate that a glycine-serinetransformation reaction takes place which is analogous to thatoccurring in green leaf tissues. Glycine may be metabolisedthrough serine by this reaction. The light stimulation of 14CO2evolution and 14C-serine formation from 14C-glycine by the Chromatiumcells are judged to be results of the light-induced enhancementof 14C-glycine uptake by the bacterial cells. 1This is paper 53 in the series "Structure and Function of ChloroplastProteins" and paper 7 of the series "Biosynthetic Mechanismof Glycolate in Chromatium". Paper 6 of the latter series isRef. 3 by Asami and Akazawa (1978).2This study was aided by research grants from the Ministry ofEducation, Science and Culture of Japan and the Nissan ScienceFoundation (Tokyo).3Postdoctoral Fellow (1980) of the Japan Society for the Promotionof Science. (Received May 20, 1980; ) |
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