In enzymology, a (+)-abscisic acid 8'-hydroxylase (EC 1.14.13.93) is an enzyme that catalyzes the chemical reaction (+)-abscisate + NADPH + H+ + O2 8'-hydroxyabscisate + NADP+ + H2O The four substrates of this enzyme are (+)-abscisate, NADPH, H+, and O2, whereas its three products are 8'-hydroxy-abscisate, NADP+, and H2O.
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| - (+)-abscisic acid 8'-hydroxylase (en)
- Acido (+)-abscissico 8'-idrossilasi (it)
- (+)-アブシシン酸-8'-ヒドロキシラーゼ (ja)
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| - (+)-アブシシン酸-8'-ヒドロキシラーゼ（(+)-abscisic acid 8'-hydroxylase）は、カロテノイド生合成酵素の一つで、次の化学反応を触媒する酸化還元酵素である。 (+)-アブシシン酸 + NADPH + H+ + O2 8'-ヒドロキシアブシシン酸 + NADP+ + H2O 反応式の通り、この酵素の基質は(+)-アブシシン酸、NADPH、H+とO2で、生成物は、NADP+とH2Oである。 この酵素は酸化還元酵素に属する。O2を酸化剤として酸素原子を組み込み還元させる。組み込む酸素原子はO2から誘導される必要はなく酸素を含有する他の供与体からでもいい。組織名はabscisate,NADPH:oxygen oxidoreductase (8'-hydroxylating)で、略して(+)-ABA 8'-hydroxylase、ABA 8'-hydroxylaseとも書かれる。 (ja)
- In enzymology, a (+)-abscisic acid 8'-hydroxylase (EC 1.14.13.93) is an enzyme that catalyzes the chemical reaction (+)-abscisate + NADPH + H+ + O2 8'-hydroxyabscisate + NADP+ + H2O The four substrates of this enzyme are (+)-abscisate, NADPH, H+, and O2, whereas its three products are 8'-hydroxy-abscisate, NADP+, and H2O. (en)
- La acido (+)- abscissico 8'-idrossilasi è un enzima appartenente alla classe delle ossidoreduttasi, che catalizza la seguente reazione: (+)-abscissato + NADPH + H+ + O2 ⇄ 8'-idrossiabscissato + NADP+ + H2O (it)
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| - (+)-abscisic acid 8'-hydroxylase (en)
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| - -abscisic acid 8'-hydroxylase (en)
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| - In enzymology, a (+)-abscisic acid 8'-hydroxylase (EC 1.14.13.93) is an enzyme that catalyzes the chemical reaction (+)-abscisate + NADPH + H+ + O2 8'-hydroxyabscisate + NADP+ + H2O The four substrates of this enzyme are (+)-abscisate, NADPH, H+, and O2, whereas its three products are 8'-hydroxy-abscisate, NADP+, and H2O. This enzyme belongs to the family of oxidoreductases, to be specific those acting on paired donors, with O2 as oxidant and incorporation or reduction of oxygen. The oxygen incorporated need not be derived from O2 with NADH or NADPH as one donor, and incorporation of one atom of oxygen into the other donor. This enzyme participates in carotenoid biosynthesis. (en)
- La acido (+)- abscissico 8'-idrossilasi è un enzima appartenente alla classe delle ossidoreduttasi, che catalizza la seguente reazione: (+)-abscissato + NADPH + H+ + O2 ⇄ 8'-idrossiabscissato + NADP+ + H2O L'enzima è una proteina eme-tiolata (P-450). Catalizza il primo passo della degradazione ossidativa dell'acido abscissico e viene considerato l'enzima più importante nel controllo della percentuale di degrazione di questo ormone delle piante.[1]. Il CO inibisce la reazione, ma i suoi effetti possono essere ribaltati dalla presenza della luce blu[1]. L'8'-idrossiabscissato generato può essere convertito in acido (-)-faseico, molto probabilmente in maniera spontanea. Altri enzimi sono coinvolti nel pathway di biosintesi dell'acido abscissico, quali la xantossina deidrogenasi (numero EC 1.1.1.288), la aldeide abscissica ossidasi (numero EC 1.2.3.14) e la 9-cis-epossicarotenoide diossigenasi (numero EC 1.13.11.51). (it)
- (+)-アブシシン酸-8'-ヒドロキシラーゼ（(+)-abscisic acid 8'-hydroxylase）は、カロテノイド生合成酵素の一つで、次の化学反応を触媒する酸化還元酵素である。 (+)-アブシシン酸 + NADPH + H+ + O2 8'-ヒドロキシアブシシン酸 + NADP+ + H2O 反応式の通り、この酵素の基質は(+)-アブシシン酸、NADPH、H+とO2で、生成物は、NADP+とH2Oである。 この酵素は酸化還元酵素に属する。O2を酸化剤として酸素原子を組み込み還元させる。組み込む酸素原子はO2から誘導される必要はなく酸素を含有する他の供与体からでもいい。組織名はabscisate,NADPH:oxygen oxidoreductase (8'-hydroxylating)で、略して(+)-ABA 8'-hydroxylase、ABA 8'-hydroxylaseとも書かれる。 (ja)
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