Phenylpyruvate tautomerase catalyzes the interconversion of the enol and keto isomers of phenylpyruvate and (p-hydroxyphenyl)pyruvate[1].
References
[1] Stamps SL, et al. Mechanism of the phenylpyruvate tautomerase activity of macrophage migration inhibitory factor: properties of the P1G, P1A, Y95F, and N97A mutants. Biochemistry. 2000 Aug 15;39(32):9671-8.8 DOI:10.1021/bi000373c
