CATH Classification

Domain Context

CATH Clusters

Superfamily Macrophage Migration Inhibitory Factor
Functional Family

Enzyme Information

5.3.2.6
2-hydroxymuconate tautomerase.
based on mapping to UniProt Q01468
(2Z,4E)-2-hydroxyhexa-2,4-dienedioate = (3E)-2-oxohex-3-enedioate.
-!- Involved in the meta-cleavage pathway for the degradation of phenols, modified phenols and catechols. -!- The enol form (2Z,4E)-2-hydroxyhexa-2,4-dienedioate is produced as part of this pathway and is converted to the keto form (3E)-2-oxohex- 3-enedioate by the enzyme. -!- Another keto form, (4E)-2-oxohex-4-enedioate (4-oxalocrotonate), was originally thought to be produced by the enzyme but later shown to be produced non-enzymatically.

UniProtKB Entries (1)

Q01468
4OT1_PSEPU
Pseudomonas putida
2-hydroxymuconate tautomerase

PDB Structure

PDB 1BJP
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Crystal structure of 4-oxalocrotonate tautomerase inactivated by 2-oxo-3-pentynoate at 2.4 A resolution: analysis and implications for the mechanism of inactivation and catalysis.
Taylor, A.B., Czerwinski, R.M., Johnson Jr., W.H., Whitman, C.P., Hackert, M.L.
Biochemistry