CATH Classification
Level | CATH Code | Description |
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3 | Alpha Beta |
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3.40 | 3-Layer(aba) Sandwich |
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3.40.50 | Rossmann fold |
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3.40.50.970 | Thiamin diphosphate (ThDP)-binding fold, Pyr/PP domains |
Domain Context
CATH Clusters
Superfamily | 3.40.50.970 |
Functional Family | 2-succinyl-5-enolpyruvyl-6-hydroxy-3-cyclohexene-1-carboxylate synthase |
Enzyme Information
2.2.1.9 |
2-succinyl-5-enolpyruvyl-6-hydroxy-3-cyclohexene-1-carboxylic-acid synthase.
based on mapping to UniProt P17109
Isochorismate + 2-oxoglutarate = 5-enolpyruvoyl-6-hydroxy-2-succinyl- cyclohex-3-ene-1-carboxylate + CO(2).
-!- Involved in the biosynthesis of vitamin K(2) (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 CO(2) but it is now known that two separate enzymes are involved: this enzyme and EC 4.2.99.20. -!- Under basic conditions, the product can spontaneously lose pyruvate to form SHCHC. -!- Formerly EC 2.5.1.64 and EC 2.5.1.n1.
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UniProtKB Entries (1)
P17109 |
MEND_ECOLI
Escherichia coli K-12
2-succinyl-5-enolpyruvyl-6-hydroxy-3-cyclohexene-1-carboxylate synthase
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PDB Structure
PDB | 5EJ5 |
External Links | |
Method | X-RAY DIFFRACTION |
Organism | |
Primary Citation |
A Thiamine-Dependent Enzyme Utilizes an Active Tetrahedral Intermediate in Vitamin K Biosynthesis
J.Am.Chem.Soc.
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