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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Amphibolic ： ウィキペディア英語版 Amphibolic The term amphibolic is used to describe a biochemical pathway that involves both catabolism and anabolism.〔(【引用サイトリンク】 amphibolic pathway )〕〔("Lehninger's Principles of Biochemistry" ), 4th edition, pp. 616, 2004.〕〔("Voet's Biochemistry" ), 2nd edition, pp. 538, 1995.〕 This term was proposed by B.Davis in 1961 to emphasise the dual metabolic role of such pathway. The citric acid cycle (The Krebs Cycle) is a good example of ''amphibolic pathway''. The first reaction of the cycle, in which oxaloacetate (a four carbon compound) condenses with acetate (a two carbon compound) to form citrate (a six carbon compound) is typically anabolic. The next few reactions, which are intramolecular rearrangements, produce isocitrate. The following two reactions are typically catabolic. COO is lost in each step and succinate (a four carbon compound) is produced. There is an interesting and critical difference in the coenzymes used in catabolic and anabolic pathways; in catabolism NAD+ serves as an oxidizing agent when it is reduced to NADH. Whereas in anabolism the coenzyme NADPH serves as the reducing agent and is converted to its oxidized form NADP+. == References == 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Amphibolic」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.