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. 2004 Apr 14;126(14):4486-7.
doi: 10.1021/ja0316521.

CD and MCD studies of the non-heme ferrous active site in (4-hydroxyphenyl)pyruvate dioxygenase: correlation between oxygen activation in the extradiol and alpha-KG-dependent dioxygenases

Michael L Neidig  1 , Michael Kavana, Graham R Moran, Edward I Solomon
Affiliations

CD and MCD studies of the non-heme ferrous active site in (4-hydroxyphenyl)pyruvate dioxygenase: correlation between oxygen activation in the extradiol and alpha-KG-dependent dioxygenases

Michael L Neidig et al. J Am Chem Soc. .

Abstract

(4-Hydroxyphenyl)pyruvate dioxygenase (HPPD) is an unusual alpha-keto acid-dependent non-heme iron dioxygenase as it incorporates both atoms of dioxygen into a single substrate, paralleling the extradiol dioxygenases. CD/MCD studies of the catalytically active ferrous site and its interaction with substrate reveal a geometic and electronic structure and mechanistic approach to oxygen activation which bridges those of the alpha-KG-dependent and the extradiol dioxygenases.

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