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O-succinylbenzoate synthase : ウィキペディア英語版 | O-succinylbenzoate synthase
''o''-Succinylbenzoate synthase (OSBS) (EC 4.2.1.113)() is an enzyme encoded by the menC gene in ''E.coli'', and catalyzes the dehydration of 2-succinyl-6-hydroxy-2,4-cyclohexadiene-1-carboxylate (SHCHC) to form 4-(2'-carboxyphenyl)-4-oxobutyrate, also called ''o''-succinylbenzoate or OSB, hence the name of the enzyme.〔 This reaction is the fourth step in the menaquinone biosynthetic pathway, which is used by bacteria to synthesize menaquinone, also known as vitamin K2. == Classification == OSBS belongs to the muconate lactonizing enzyme subgroup of the enolase superfamily. The systematic name of this enzyme is (1R,6R)-6-hydroxy-2-succinylcyclohexa-2,4-diene-1-carboxylate hydrolyase (2-succinylbenzoate-forming). Other common names include: ''o''-succinylbenzoic acid synthase and OSB synthase.
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