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 gallate. 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. [PMID: 21219457]
[EC created 2011 as, modified 2011, transferred 2012 to EC]

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