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Paul F. Fitzpatrick

Researcher at University of Texas Health Science Center at San Antonio

Publications -  195
Citations -  7045

Paul F. Fitzpatrick is an academic researcher from University of Texas Health Science Center at San Antonio. The author has contributed to research in topics: Tyrosine hydroxylase & Phenylalanine hydroxylase. The author has an hindex of 42, co-authored 192 publications receiving 6514 citations. Previous affiliations of Paul F. Fitzpatrick include Brookhaven National Laboratory & Texas A&M University.

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The kinetic mechanism of D-amino acid oxidase with D-alpha-aminobutyrate as substrate. Effect of enzyme concentration on the kinetics.

TL;DR: Computer simulations show that the kinetic isotopes effects on the reductive half-reaction with D-alanine reported by Porter et al. can be explained using a two-step model with a kinetic isotope effect of 1.75 on the limiting rate of reduction.
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Reductive half-reaction of nitroalkane oxidase: Effect of mutation of the active site aspartate to glutamate

TL;DR: Results support the assignment of Asp402 as the active site base in nitroalkane oxidase, which is homologous to the acyl-CoA dehydrogenase family of enzymes.
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Mechanism of nitroalkane oxidase: 2. pH and kinetic isotope effects

TL;DR: P pH and kinetic isotope effects with [1, 1-(2)H(2)]nitroethane have been used to study the mechanism of nitroalkane oxidase, indicating that nitroethylene has no significant external commitments to catalysis.
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Kinetic mechanism of phenylalanine hydroxylase: intrinsic binding and rate constants from single-turnover experiments.

TL;DR: Similar reactions using 6-methyltetrahydropterin indicate a preference for the physiological pterin during hydroxylation in PheH, which largely determines k(cat).