phenylpyruvate tautomerase activity

uniprot-protein:A1XDS9, uniprot-protein:A9BB73, uniprot-protein:A9JSE7, uniprot-protein:B2J6C9, uniprot-protein:B9SL16, uniprot-protein:C9YDF2, uniprot-protein:D0G778, uniprot-protein:D2HRC4, uniprot-protein:E4NYV3, uniprot-protein:F6A0Y5, uniprot-protein:F6S243, uniprot-protein:F7DCF9, uniprot-protein:G1M585, uniprot-protein:G1N6G2, uniprot-protein:G3SQS6, uniprot-protein:G4SZ39, uniprot-protein:H0ZJ04, uniprot-protein:I2CSA6, uniprot-protein:O44786, uniprot-protein:O55052, uniprot-protein:P14174, uniprot-protein:P30904, uniprot-protein:P34884, uniprot-protein:P80177, uniprot-protein:P80928, uniprot-protein:P81529, uniprot-protein:P81748, uniprot-protein:P91850, uniprot-protein:Q02960, uniprot-protein:Q0K829, uniprot-protein:Q1ZZU7, uniprot-protein:Q4R549, uniprot-protein:Q545F0, uniprot-protein:Q6DN04, uniprot-protein:Q76BK2