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Standard Name


Gene Synonym(s)

ydcE, ECK1455, b1461, JW1456[1][2], JW1456

Product Desc.

probable 4-oxalocrotonate tautomerase (4-OT)[2][3];

Component of probable 4-oxalocrotonate tautomerase (4-OT)[3]

Phenylpyruvate tautomerase; other substrates are (p-hydroxyphenyl)pyruvate and 2-hydroxy-2,4-pentadienoate; homodimeric[4]

Product Synonyms(s)

4-oxalocrotonate tautomerase[1], PptA[2][1], YdcE[2][1], B1461[2][1] , ECK1455, JW1456, ydcE, b1461

Function from GO

<GO_nr />

Knock-Out Phenotype

transcription unit(s): ydcE[2]

Quick Links

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Cleavage of PptA fMet was confirmed by mass spec: obs. MW = 8540. N-terminal proline is presumed to be the catalytic base residue of the active site.[4]


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  1. 1.0 1.1 1.2 1.3 1.4 Riley, M. et al. (2006) Nucleic Acids Res 34:1-6 (corrected supplemental data from B. Wanner)
  2. 2.0 2.1 2.2 2.3 2.4 2.5 EcoCyc (release 10.6; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
  3. 3.0 3.1 EcoCyc (release 11.1; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
  4. 4.0 4.1 EcoGene: Rudd, KE (2000) EcoGene: a genome sequence database for Escherichia coli K-12. Nucleic Acids Res 28:60-4.