The Enzyme Database

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Accepted name: 4-oxalomesaconate tautomerase
Reaction: (1E)-4-oxobut-1-ene-1,2,4-tricarboxylate = (1E,3E)-4-hydroxybuta-1,3-diene-1,2,4-tricarboxylate
For diagram of the protocatechuate 3,4-cleavage pathway, click here
Glossary: (1E)-4-oxobut-1-ene-1,2,4-tricarboxylate = keto tautomer of 4-oxalomesaconate
(1E,3E)-4-hydroxybuta-1,3-diene-1,2,4-tricarboxylate = one of the enol tautomers of 4-oxalomesaconate
Other name(s): GalD
Systematic name: 4-oxalomesaconate ketoenol-isomerase
Comments: This enzyme has been characterized from the bacterium Pseudomonas putida KT2440 and is involved in the degradation pathway of syringate and 3,4,5-trihydroxybenzoate. It catalyses the interconversion of two of the tautomers of 4-oxalomesaconate, a reaction that can also occur spontaneously.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
1.  Nogales, J., Canales, A., Jiménez-Barbero, J., Serra B., Pingarrón, J. M., García, J. L. and Díaz, E. Unravelling the gallic acid degradation pathway in bacteria: the gal cluster from Pseudomonas putida. Mol. Microbiol. 79 (2011) 359–374. [DOI] [PMID: 21219457]
[EC created 2011 as EC, modified 2011, transferred 2012 to EC]

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