| EC |
4.2.1.113 |
| Accepted name: |
o-succinylbenzoate synthase |
| Reaction: |
(1R,6R)-6-hydroxy-2-succinylcyclohexa-2,4-diene-1-carboxylate = 2-succinylbenzoate + H2O |
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For diagram of vitamin K biosynthesis, click here |
| Glossary: |
2-succinylbenzoate = o-succinylbenzoate = 4-(2-carboxyphenyl)-4-oxobutanoate |
| Other name(s): |
o-succinylbenzoic acid synthase; OSB synthase; OSBS; 2-succinylbenzoate synthase; MenC |
| Systematic name: |
(1R,6R)-6-hydroxy-2-succinylcyclohexa-2,4-diene-1-carboxylate hydro-lyase (2-succinylbenzoate-forming) |
| Comments: |
Belongs to the enolase superfamily and requires divalent cations, preferably Mg2+ or Mn2+, for activity. Forms part of the vitamin-K-biosynthesis pathway. |
| Links to other databases: |
BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 97089-83-3 |
| References: |
| 1. |
Sharma, V., Meganathan, R. and Hudspeth, M.E. Menaquinone (vitamin K2) biosynthesis: cloning, nucleotide sequence, and expression of the menC gene from Escherichia coli. J. Bacteriol. 175 (1993) 4917–4921. [DOI] [PMID: 8335646] |
| 2. |
Klenchin, V.A., Taylor Ringia, E.A., Gerlt, J.A. and Rayment, I. Evolution of enzymatic activity in the enolase superfamily: structural and mutagenic studies of the mechanism of the reaction catalyzed by o-succinylbenzoate synthase from Escherichia coli. Biochemistry 42 (2003) 14427–14433. [DOI] [PMID: 14661953] |
| 3. |
Palmer, D.R., Garrett, J.B., Sharma, V., Meganathan, R., Babbitt, P.C. and Gerlt, J.A. Unexpected divergence of enzyme function and sequence: "N-acylamino acid racemase" is o-succinylbenzoate synthase. Biochemistry 38 (1999) 4252–4258. [DOI] [PMID: 10194342] |
| 4. |
Thompson, T.B., Garrett, J.B., Taylor, E.A., Meganathan, R., Gerlt, J.A. and Rayment, I. Evolution of enzymatic activity in the enolase superfamily: structure of o-succinylbenzoate synthase from Escherichia coli in complex with Mg2+ and o-succinylbenzoate. Biochemistry 39 (2000) 10662–10676. [DOI] [PMID: 10978150] |
| 5. |
Taylor Ringia, E.A., Garrett, J.B., Thoden, J.B., Holden, H.M., Rayment, I. and Gerlt, J.A. Evolution of enzymatic activity in the enolase superfamily: functional studies of the promiscuous o-succinylbenzoate synthase from Amycolatopsis. Biochemistry 43 (2004) 224–229. [DOI] [PMID: 14705949] |
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| [EC 4.2.1.113 created 2007] |
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| EC |
6.2.1.26 |
| Accepted name: |
o-succinylbenzoate—CoA ligase |
| Reaction: |
ATP + 2-succinylbenzoate + CoA = AMP + diphosphate + 4-(2-carboxyphenyl)-4-oxobutanoyl-CoA |
|
For diagram of vitamin K biosynthesis, click here |
| Glossary: |
2-succinylbenzoate = o-succinylbenzoate = 4-(2-carboxyphenyl)-4-oxobutanoate |
| Other name(s): |
o-succinylbenzoyl-coenzyme A synthetase; o-succinylbenzoate:CoA ligase (AMP-forming) |
| Systematic name: |
2-succinylbenzoate:CoA ligase (AMP-forming) |
| Links to other databases: |
BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 72506-70-8 |
| References: |
| 1. |
Heide, L., Arendt, S. and Leistner, E. Enzymatic-synthesis, characterization, and metabolism of the coenzyme-A ester of o-succinylbenzoic acid, an intermediate in menaquinone (vitamin K2) biosynthesis. J. Biol. Chem. 257 (1982) 7396–7400. [PMID: 7045104] |
| 2. |
Kolkmann, R. and Leistner, E. 4-(2′-Carboxyphenyl)-4-oxobutyryl coenzyme A ester, an intermediate in vitamin K2 (menaquinone) biosynthesis. Z. Naturforsch. C: Sci. 42 (1987) 1207–1214. [PMID: 2966501] |
| 3. |
Meganathan, R. and Bentley, R. Menaquinone (vitamin K2) biosynthesis: conversion of o-succinylbenzoic acid to 1,4-dihydroxy-2-naphthoic acid by Mycobacterium phlei enzymes. J. Bacteriol. 140 (1979) 92–98. [PMID: 500558] |
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| [EC 6.2.1.26 created 1992] |
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