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猪肝二氢嘧啶脱氢酶催化NADPH氧化的立体化学

Stereochemistry of NADPH oxidation by dihydropyrimidine dehydrogenase from pig liver.

作者信息

Podschun B

机构信息

Theodor-Boveri-Institut fuer Biowissenschaften (Biozentrum), Universitaet Wuerzburg, Germany.

出版信息

Biochem Biophys Res Commun. 1992 Jan 31;182(2):609-16. doi: 10.1016/0006-291x(92)91776-m.

DOI:10.1016/0006-291x(92)91776-m
PMID:1734873
Abstract

Dihydropyrimidine dehydrogenase reduces uracil to 5,6-dihydrouracil in a strictly NADPH-dependent reaction. Either by analysing the 1H-NMR spectra of the NADP+ products formed or by determination of the kinetic isotope effects of stereospecifically deuterated coenzymes dihydropyrimidine dehydrogenase was found to abstract specifically the pro-S hydrogen of NADPH, making it a member of the B-side stereospecific class of dehydrogenases.

摘要

二氢嘧啶脱氢酶在严格依赖烟酰胺腺嘌呤二核苷酸磷酸(NADPH)的反应中将尿嘧啶还原为5,6 - 二氢尿嘧啶。通过分析所形成的烟酰胺腺嘌呤二核苷酸磷酸(NADP⁺)产物的¹H - 核磁共振(¹H - NMR)谱,或者通过测定立体特异性氘代辅酶的动力学同位素效应,发现二氢嘧啶脱氢酶特异性地提取NADPH的前手性S氢,使其成为B面立体特异性脱氢酶类的一员。

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Stereochemistry of NADPH oxidation by dihydropyrimidine dehydrogenase from pig liver.猪肝二氢嘧啶脱氢酶催化NADPH氧化的立体化学
Biochem Biophys Res Commun. 1992 Jan 31;182(2):609-16. doi: 10.1016/0006-291x(92)91776-m.
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Dihydropyrimidine dehydrogenase. Kinetic mechanism for reduction of uracil by NADPH.
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Porcine recombinant dihydropyrimidine dehydrogenase: comparison of the spectroscopic and catalytic properties of the wild-type and C671A mutant enzymes.猪重组二氢嘧啶脱氢酶:野生型和C671A突变体酶的光谱和催化特性比较。
Biochemistry. 1998 Dec 15;37(50):17598-609. doi: 10.1021/bi9815997.
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Kinetic mechanism of dihydropyrimidine dehydrogenase from pig liver.
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Acid base catalytic mechanism of the dihydropyrimidine dehydrogenase from pH studies.通过pH研究对二氢嘧啶脱氢酶的酸碱催化机制进行研究。
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(R)-5-fluoro-5,6-dihydrouracil: kinetics of oxidation by dihydropyrimidine dehydrogenase and hydrolysis by dihydropyrimidine aminohydrolase.
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Effects of uridine and thymidine on the degradation of 5-fluorouracil, uracil, and thymine by rat liver dihydropyrimidine dehydrogenase.尿苷和胸苷对大鼠肝脏二氢嘧啶脱氢酶降解5-氟尿嘧啶、尿嘧啶和胸腺嘧啶的影响。
Cancer Res. 1985 Nov;45(11 Pt 1):5553-6.

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