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Stereoselective mephobarbital hydroxylation cosegregates with mephenytoin hydroxylation
Clinical Pharmacology and Therapeutics, 1985The 8-hour urinary recovery of 4-hydroxy-mephobarbital has been measured after oral administration of racemic mephobarbital (90 mg) in 17 extensive (EM) and six poor (PM) metabolizer phenotypes of mephenytoin. The recovery of this metabolite was measurable in every EM and ranged from 2.5% to 48% (10.9% +/- 1.9% of dose), but was not detected in any PM (
A, Küpfer, R A, Branch
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Enzymatic hydroxylation reactions
Current Opinion in Biotechnology, 2000During the past 18 months, considerable progress has been made in the understanding of the key enzyme-substrate interactions that control the regioselectivity and stereoselectivity of the hydroxylation reaction performed by cytochrome-P450-dependent enzymes of mammalian origin. The manipulation of microbial hydroxylating enzymes, in both whole-cell and
H L, Holland, H K, Weber
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Cold Spring Harbor Protocols, 2007
INTRODUCTIONThe hydroxyl-radical footprinting methodology has wide applications to studying protein-DNA interactions, as well as structural perturbations (e.g., bending) that occur in DNA during protein binding. Hydroxyl radicals cleave DNA by abstracting a hydrogen atom from C4 of the sugar in the minor groove.
Michael, Carey, Stephen T, Smale
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INTRODUCTIONThe hydroxyl-radical footprinting methodology has wide applications to studying protein-DNA interactions, as well as structural perturbations (e.g., bending) that occur in DNA during protein binding. Hydroxyl radicals cleave DNA by abstracting a hydrogen atom from C4 of the sugar in the minor groove.
Michael, Carey, Stephen T, Smale
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Free Radical Research, 1999
Generation of hydroxyl radicals in terephthalate (benzene-1,4-dicarboxylic acid) solution yields fluorescent 2-hydroxy-terephthalate. The reaction product is stable for hours and can readily be assessed using standard fluorimeters. The efficiency, i.e.
M, Saran, K H, Summer
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Generation of hydroxyl radicals in terephthalate (benzene-1,4-dicarboxylic acid) solution yields fluorescent 2-hydroxy-terephthalate. The reaction product is stable for hours and can readily be assessed using standard fluorimeters. The efficiency, i.e.
M, Saran, K H, Summer
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Hydroxylation of 3-nitrotyrosine by hydroxyl radical
Chinese Chemical Letters, 2007Abstract Hydroxylation of 3-nitrotyrosine (3-NT) and 3-NT containing peptide Gly-nitroTyr-Gly in aqueous solution by hydroxyl radical were investigated with gamma irradiation. The structures of the hydroxylated products were confirmed by electrospray ionization mass spectrometry and 1 H NMR spectrometry.
Jun Chen Dong +3 more
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Hydroxylation of desmethylimipramine: Dependence on the debrisoquin hydroxylation phenotype
Clinical Pharmacology and Therapeutics, 1987The 2-hydroxylation of desmethylimipramine (DMI) was studied in 14 healthy subjects previously phenotyped with respect to debrisoquin hydroxylation. After a single oral dose (25 mg), slow hydroxylators of debrisoquin had significantly lower total and metabolic clearances and longer plasma half-lives of DMI and excreted less 2-hydroxydesmethylimipramine
SPINA, Edoardo +3 more
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Effective Inhibition of Hydroxyl Radicals by Hydroxylated Biphenyl Compounds
Free Radical Research Communications, 1993In aqueous media, approximate rate constants for the reactions between hydroxyl radicals (.OH) and biphenyl compounds such as dehydrodieugenol, magnolol, honokiol, dehydrodidihydroeugenol, dehydrodivanillyl alcohol, and dehydrodicreosol were estimated by competition reactions for .OH between these biphenyls and 5,5-dimethyl-1-pyrroline-N-oxide (DMPO ...
J, Taira +5 more
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Biochemical Acyl Hydroxylations
1972McKenna and Kallio [1] ended their review on the biology of hydrocarbons with a statement which was to prove extremely relevant during the following years: The next review of the subject will have at its disposal the basic data necessary to concern itself not with pathways but rather with a penetrating analysis of mechanism at the molecular and ...
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