紅色非硫黄細菌Rhodopseudomonas sp. No.7の生育と細胞内酵素活性に及ぼすC_<2->化合物の酸化還元レベルと炭酸水素ナトリウムの影響

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Growth of Rhodopseudomonas sp. No. 7 in a medium containing ethanol as an electron donor and NH^+_4 as a nitrogen source was dependent on the concentration of bicarbonate under anaerobic-light conditions. Under the optimum growth conditions, about 1.93 g of cells was obtained in the medium containing 1 g of ethanol and 2 g of sodium bicarbonate. However, the growth of the medium containing acetate was independent of the bicarbonate concentration. The level of ribulose-1,5-bisphosphate carboxylase (EC 4. 1. 1. 39) in cells grown on ethanol was higher than that of cells grown on acetate, and the enzyme level was affected by the bicarbonate concentration. On the other hand, the levels of pyruvate carboxylase (EC 4. 1. 1. 32) and isocitrate lyase (EC 4. 1. 3. 1) were not affected by the above growth conditions.
社団法人日本生物工学会の論文
1993-11-25