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In enzymology, a butyrate kinase () is an enzyme that catalyzes the chemical reaction :ADP + butyryl-phosphate ATP + butyrate Thus, the two substrates of this enzyme are ADP and butyryl-phosphate, whereas its two products are ATP and butyrate. This enzyme belongs to the family of transferases, specifically those transferring phosphorus-containing groups (phosphotransferases) with a carboxy group as acceptor. The systematic name of this enzyme class is ATP:butanoate 1-phosphotransferase. This enzyme participates in butyrate metabolism. This enzyme is transcribed from the gene ''buk'', which is part of the ASHKA super family. ==Enzyme Mechanism== :ADP + butyryl-phosphate ATP + butyrate The reaction above is a nucleophilic substitution reaction. An electron pair from an oxygen on ADP attacks the phosphorus on butyryl-phosphate, breaking the bond between phosphorus and oxygen to create ATP and butyrate. The arrow-pushing mechanism is shown above. It should be noted that the reaction can also occur in the reverse direction, as shown below, under certain fermentation conditions. :ATP + butyrate ADP + butyryl-phosphate 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「butyrate kinase」の詳細全文を読む スポンサード リンク
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