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| {{enzyme
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| | Name = secologanin synthase
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| | EC_number = 1.3.3.9
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| | CAS_number = 258339-71-8
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| | IUBMB_EC_number = 1/3/3/9
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| | GO_code = 0050616
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| In [[enzymology]], a '''secologanin synthase''' ({{EC number|1.3.3.9}}) is an [[enzyme]] that [[catalysis|catalyzes]] the [[chemical reaction]]
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| :loganin + NADPH + H<sup>+</sup> + O<sub>2</sub> <math>\rightleftharpoons</math> secologanin + NADP<sup>+</sup> + 2 H<sub>2</sub>O | |
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| The 4 [[substrate (biochemistry)|substrates]] of this enzyme are [[loganin]], [[nicotinamide adenine dinucleotide phosphate|NADPH]], [[hydrogen ion|H<sup>+</sup>]], and [[oxygen|O<sub>2</sub>]], whereas its 3 [[product (chemistry)|products]] are [[secologanin]], [[nicotinamide adenine dinucleotide phosphate|NADP<sup>+</sup>]], and [[water|H<sub>2</sub>O]].
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| This enzyme belongs to the family of [[oxidoreductase]]s, specifically those acting on the CH-CH group of donor with oxygen as acceptor. The systematic name of this enzyme class is '''loganin:oxygen oxidoreductase (ring-cleaving)'''. This enzyme participates in [[indole]] and [[ipecac]] [[alkaloid]] biosynthesis.
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| ==References==
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| {{reflist|1}}
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| * {{cite journal | author = Yamamoto H, Katano N, Ooi A, Inoue K | date = 2000 | title = Secologanin synthase which catalyzes the oxidative cleavage of loganin into secologanin is a cytochrome P450 | journal = [[Phytochemistry (journal)|Phytochemistry]]. | volume = 53 | pages = 7–12 | pmid = 10656401 | doi = 10.1016/S0031-9422(99)00471-9 | issue = 1 }}
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| * {{cite journal | author = Strack D, Matern U, Schroder J | date = 2000 | title = Indole alkaloid biosynthesis in Catharanthus roseus: new enzyme activities and identification of cytochrome P450 CYP72A1 as secologanin synthase | journal = Plant. J. | volume = 24 | pages = 797–804 | pmid = 11135113 | doi = 10.1046/j.1365-313x.2000.00922.x | issue = 6 }}
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| * {{cite journal | author = Yamamoto H, Katano N, Ooi Y and Inoue K | date = 1999 | title = Transformation of loganin and 7-deoxyloganin into secologanin by Lonicera japonica cell suspension cultures | journal = [[Phytochemistry (journal)|Phytochemistry]] | volume = 50 | issue = 3 | pages = 417–422 | doi = 10.1016/S0031-9422(98)00613-X }}
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| [[Category:EC 1.3.3]]
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| [[Category:NADPH-dependent enzymes]]
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| [[Category:Enzymes of unknown structure]]
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| {{1.3-enzyme-stub}}
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