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・ Butyllithium
・ Butylo, Virginia
・ Butylone
・ Butylparaben
・ Butylphthalide
・ Butylscopolamine
・ Butylthiol
・ Butyltin trichloride
・ Butyltolylquinuclidine
・ Butynamine
・ Butyne
・ Butyraldehyde
・ Butyramide
・ Butyrate
・ Butyrate esterase
Butyrate kinase
・ Butyrate—acetoacetate CoA-transferase
・ Butyrate—CoA ligase
・ Butyrfentanyl
・ Butyriboletus
・ Butyriboletus abieticola
・ Butyriboletus appendiculatus
・ Butyriboletus autumniregius
・ Butyriboletus brunneus
・ Butyriboletus cepaeodoratus
・ Butyriboletus fechtneri
・ Butyriboletus fuscoroseus
・ Butyriboletus persolidus
・ Butyriboletus primiregius
・ Butyriboletus querciregius


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Butyrate kinase : ウィキペディア英語版
Butyrate kinase

In enzymology, a butyrate kinase () is an enzyme that catalyzes the chemical reaction
:ADP + butyryl-phosphate \rightleftharpoons 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 \rightleftharpoons 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 \rightleftharpoons 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



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