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Hydrolase-Like Properties of a Cofactor-Independent Dioxygenase

  • April 23, 2012

The (2-alkyl)-3-hydroxy-4(1H)-quinolone-cleaving dioxygenase Hod has an α/β-hydrolase fold and a Ser/His/Asp triad in its active site. Isatoic anhydride, a suicide substrate of serine hydrolases, inactivates Hod by covalent modification of the active-site serine, thus indicating that the α/β-hydrolase fold can accommodate dioxygenase chemistry without completely abandoning hydrolase-like properties.


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