2.2.1.9: 2-succinyl-5-enolpyruvyl-6-hydroxy-3-cyclohexene-1-carboxylic-acid synthase
This is an abbreviated version!
For detailed information about 2-succinyl-5-enolpyruvyl-6-hydroxy-3-cyclohexene-1-carboxylic-acid synthase, go to the full flat file.
Word Map on EC 2.2.1.9
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2.2.1.9
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menaquinone
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thiamin
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thdp-dependent
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diphosphate-dependent
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alpha-ketoglutarate
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2-succinyl-6-hydroxy-2,4-cyclohexadiene-1-carboxylic
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dioxide
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benzoylformate
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decarboxylases
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stereoselective
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hydrolases
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alpha/beta
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o-succinylbenzoic
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metal-ion-dependent
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three-domain
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two-stage
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medium-resolution
- 2.2.1.9
- menaquinone
- thiamin
-
thdp-dependent
-
diphosphate-dependent
- alpha-ketoglutarate
-
2-succinyl-6-hydroxy-2,4-cyclohexadiene-1-carboxylic
- dioxide
- benzoylformate
- decarboxylases
-
stereoselective
- hydrolases
- alpha/beta
-
o-succinylbenzoic
-
metal-ion-dependent
-
three-domain
-
two-stage
-
medium-resolution
Reaction
Synonyms
(1R,2S,5S,6S)-2-succinyl-5-enolpyruvyl-6-hydroxy-3-cyclohexene-1-carboxylate synthase, (1R,2S,5S,6S)-2-succinyl-5-enolpyruvyl-6-hydroxycyclohex-3-ene-1-carboxylate synthase, 2-succinyl-5-enolpyruvyl-6-hydroxy-3-cyclohexadiene-1-carboxylate synthase, 2-succinyl-5-enolpyruvyl-6-hydroxy-3-cyclohexene-1-carboxylate synthase, 2-succinyl-5-enolpyruvyl-6-hydroxy-3-cyclohexene-1-carboxylic acid synthase, EC 2.5.1.64, EcMenD, MenD, Rv0555, SEPHCHC synthase, SHCHC synthase
ECTree
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Systematic Name
Systematic Name on EC 2.2.1.9 - 2-succinyl-5-enolpyruvyl-6-hydroxy-3-cyclohexene-1-carboxylic-acid synthase
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isochorismate:2-oxoglutarate 4-oxopentanoatetransferase (decarboxylating)
Requires Mg2+ for maximal activity. This enzyme is involved in the biosynthesis of vitamin K2 (menaquinone). In most anaerobes and all Gram-positive aerobes, menaquinone is the sole electron transporter in the respiratory chain and is essential for their survival. It had previously been thought that the products of the reaction were (1R,6R)-6-hydroxy-2-succinylcyclohexa-2,4-diene-1-carboxylate (SHCHC), pyruvate and CO2 but it is now known that two separate enzymes are involved: this enzyme and EC 4.2.99.20, 2-succinyl-6-hydroxy-2,4-cyclohexadiene-1-carboxylate synthase. Under basic conditions, the product can spontaneously lose pyruvate to form SHCHC.