Results 11 to 20 of about 538,127 (242)
Human Carbonyl Reductase 1 Is an S-Nitrosoglutathione Reductase [PDF]
Human carbonyl reductase 1 (hCBR1) is an NADPH-dependent short chain dehydrogenase/reductase with broad substrate specificity and is thought to be responsible for the in vivo reduction of quinones, prostaglandins, and other carbonyl-containing compounds including xenobiotics.
Brandon Tavshanjian+4 more
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Ketopantoyl lactone reductase is a conjugated polyketone reductase [PDF]
Ketopantoyl lactone reductase (EC 1.1.1.168) of Saccharomyces cerevisiae was found to catalyze the reduction of a variety of natural and unnatural conjugated polyketone compounds and quinones, such as isatin, ninhydrin, camphorquinone and beta-naphthoquinone in the presence of NADPH. 5-Bromoisatin is the best substrate for the enzyme (Km = 3.1 mM; Vmax
Sakayu Shimizu+3 more
openaire +3 more sources
Quinone Reductase 2 Is a Catechol Quinone Reductase [PDF]
The functions of quinone reductase 2 have eluded researchers for decades even though a genetic polymorphism is associated with various neurological disorders. Employing enzymatic studies using adrenochrome as a substrate, we show that quinone reductase 2 is specific for the reduction of adrenochrome, whereas quinone reductase 1 shows no activity.
Leonid Buryanovskyy+2 more
openaire +3 more sources
RIBONUCLEOTIDE REDUCTASES [PDF]
Ribonucleotide reductases provide the building blocks for DNA replication in all living cells. Three different classes of enzymes use protein free radicals to activate the substrate. Aerobic class I enzymes generate a tyrosyl radical with an iron-oxygen center and dioxygen, class II enzymes employ adenosylcobalamin, and the anaerobic class III enzymes
A, Jordan, P, Reichard
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Glyphosate inhibition of ferric reductase activity in iron deficient sunflower roots [PDF]
Iron (Fe) deficiency is increasingly being observed in cropping systems with frequent glyphosate applications. A likely reason for this is that glyphosate interferes with root uptake of Fe by inhibiting ferric reductase in roots required for Fe ...
Cakmak, Ismail+10 more
core +3 more sources
Mitochondrial Thioredoxin System as a Modulator of Cyclophilin D Redox State [PDF]
The mitochondrial thioredoxin system (NADPH, thioredoxin reductase, thioredoxin) is a major redox regulator. Here we have investigated the redox correlation between this system and the mitochondrial enzyme cyclophilin D.
Bindoli, Alberto+7 more
core +1 more source
A hidden cause of infertility in hypothyroid patients [PDF]
Methylene tetrahydrofolate reductase (MTHFR) gene mutations could be the cause of infertility in hypothyroid patients. Hence, it is worthy to screen for MTHFR gene mutations in infertile hypothyroid females and their partners if infertility persists ...
Ahmed, Soha Magdy+4 more
core +1 more source
Fragment-based discovery of a regulatory site in thioredoxin glutathione reductase acting as "doorstop" for NADPH entry [PDF]
Members of the FAD/NAD-linked reductase family are recognized as crucial targets in drug development for cancers, inflammatory disorders, and infectious diseases.
Angelucci, Francesco+16 more
core +3 more sources
The mammalian thioredoxin reductases (TrxRs) are a family of selenium-containing pyridine nucleotide-disulphide oxidoreductases with mechanistic and sequence identity, including a conserved -Cys-Val-Asn-Val-Gly-Cys- redox catalytic site, to glutathione reductases.
D, Mustacich, G, Powis
openaire +2 more sources
Functional and Biogenetical Heterogeneity of the Inner Membrane of Rat-Liver Mitochondria [PDF]
Rat liver mitochondria were fragmented by a combined technique of swelling, shrinking, and sonication. Fragments of inner membrane were separated by density gradient centrifugation.
Allmann D. W.+50 more
core +1 more source