EC - Phenylpyruvate tautomerase

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IntEnz Enzyme Nomenclature


Accepted name:
phenylpyruvate tautomerase
Other names:
phenylpyruvic ketoenol isomerase
phenylpyruvate ketoenol tautomerase
Systematic name:
phenylpyruvate ketoenol-isomerase



Also acts on other arylpyruvates.

Links to other databases

Enzymes and pathways: NC-IUBMB , BRENDA , ExplorEnz , ENZYME@ExPASy , KEGG , MetaCyc , NIST 74 , UniPathway
Structural data: CSA , EC2PDB
Gene Ontology: GO:0050178
CAS Registry Number: 9023-54-5
UniProtKB/Swiss-Prot: (16) [show] [UniProt]


  1. Blasi, F., Fragonmele, F. and Covelli, I.
    Thyroidal phenylpyruvate tautomerase. Isolation and characterization.
    J. Biol. Chem. 244: 4864-4870 (1969). [PMID: 5824560]
  2. Knox, W.E.
    p-Hydroxyphenylpyruvate enol-keto tautomerase.
    Methods Enzymol. 2: 289-295 (1955).
  3. Knox, W.E. and Pitt, B.M.
    Enzymic catalysis of the keto-enol tautomerization of phenylpyruvic acids.
    J. Biol. Chem. 225: 675-688 (1957). [PMID: 13416270]

[EC created 1961]