Properties and Physiological Functions of Glutamate Dehydrogenase and Glutamate Synthase in Ammonium-Assimilating Metabolism in Euglena gracilis Z
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概要
- 論文の詳細を見る
NADP-dependent glutamate dehyrogenase (GDH; EC 1.4.1.4) and NADH-dependent glutamate synthase (GOGAT; EC 1.4.1.14), the key enzymes in ammoina assimilating reactions in Euglena gracilis were studied. Repression of the synthesis of GDH during growth of E. gracilis on L-glutamate or Casamino acids was completely removed by the addition of ammonia and glucose. By contrast, the addition of L-glutamate or Casamino acids to the cells growing ammonium and glucose resulted in a strong repression of GDH. The activity of GOGAT was constant upon either addition. Some enzymological properties of the two enzymes were also studied. From these results, we concluded that GDH serves mainly as an anabolic agent in the ammonia assimilation while GOGAT plays an auxilliary role of ammonia assimilation in this organism.
- 大阪府立大学の論文
- 1984-03-31
著者
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Miyatake Kazutaka
Nutrition Laboratory College Of Agriculture
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Kitaoka Shozaburo
Nutrition Laboratory College Of Agriculture
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