Nad P H Oxidase
Mostrando 25-36 de 58 artigos, teses e dissertações.
-
25. Oxidation of NAD(P)H in a Reconstituted Spinach Chloroplast Preparation Using Ascorbate and Hydrogen Peroxide 1
The conversion of fructose-1,6-bisphosphate to glycerate-3-phosphate (PGA) was studied in a reconstituted spinach (Spinacia oleracea L.) chloroplast preparation to determine whether a chloroplast-localized NAB(P)H-oxidizing system (Kow, Smyth, Gibbs 1982 Plant Physiol 69: 72-76 with substrates of ascorbate, NAD(P)H, and H2O2 could serve as a coupling enzyme
-
26. Cofactor Engineering: a Novel Approach to Metabolic Engineering in Lactococcus lactis by Controlled Expression of NADH Oxidase
NADH oxidase-overproducing Lactococcus lactis strains were constructed by cloning the Streptococcus mutans nox-2 gene, which encodes the H2O-forming NADH oxidase, on the plasmid vector pNZ8020 under the control of the L. lactis nisA promoter. This engineered system allowed a nisin-controlled 150-fold overproduction of NADH oxidase at pH 7.0, resulting in dec
American Society for Microbiology.
-
27. Out, damned dot: studies of the NAD(P)H oxidase in atherosclerosis
American Society for Clinical Investigation.
-
28. The NAD(P)H Oxidase Homolog Nox4 Modulates Insulin-Stimulated Generation of H2O2 and Plays an Integral Role in Insulin Signal Transduction
Insulin stimulation of target cells elicits a burst of H2O2 that enhances tyrosine phosphorylation of the insulin receptor and its cellular substrate proteins as well as distal signaling events in the insulin action cascade. The molecular mechanism coupling the insulin receptor with the cellular oxidant-generating apparatus has not been elucidated. Using rev
American Society for Microbiology.
-
29. Solubilization and Separation of a Plant Plasma Membrane NADPH-O2- Synthase from Other NAD(P)H Oxidoreductases.
Solubilization and ion-exchange chromatography of plasma membrane proteins obtained from bean (Phaseolus vulgaris L.) seedlings resulted in a single NAD(P)H-O2--synthase protein peak. This enzyme showed a high preference toward NADPH as a substrate (reaction rate, 27.4 nmol O2- produced min-1 mg-1 protein), whereas NADH reactions ranged from 0 to maximally 1
-
30. Site of action of isoniazid on the electron transport chain and its relationship to nicotinamide adenine dinucleotide regulation in Mycobacterium phlei.
Isoniazid (INH) interacts with nicotinamide adenine dinucleotide (NAD+) in the regulation of reduced NAD (NADH) oxidation in electron transport particles from Mycobacterium phlei. the interaction was shown to be at the level of the NADH dehydrogenase by the use of menadione as an artificial electron acceptor. Binding studies indicated that INH and NAD+ did n
-
31. The Generation of Active Oxygen Species Differs in Tobacco and Grapevine Mesophyll Protoplasts1
Our previous results have shown that oxidative stress may reduce the regeneration potential of protoplasts, but only protoplasts that are able to supply extracellularly H2O2 can actually divide (C.I. Siminis, A.K. Kanellis, K.A. Roubelakis-Angelakis [1993] Physiol Plant 87: 263–270; C.I. Siminis, A.K. Kanellis, K.A. Roubelakis-Angelakis [1994] Plant Physio
American Society of Plant Physiologists.
-
32. Specificity of the Organic Acid Activation of Alternative Oxidase in Plant Mitochondria.
The claim that succinate and malate can directly stimulate the activity of the alternative oxidase in plant mitochondria (A.M. Wagner, C.W.M. van den Bergen, H. Wincencjusz [1995] Plant Physiol 108: 1035-1042) was reinvestigated using sweet potato (Ipomoea batatas L.) mitochondria. In whole mitochondria, succinate (in the presence of malonate) and both L- an
-
33. Role of superoxide, nitric oxide, and peroxynitrite in doxorubicin-induced cell death in vivo and in vitro
Doxorubicin (DOX) is a potent available antitumor agent; however, its clinical use is limited because of its cardiotoxicity. Cell death is a key component in DOX-induced cardiotoxicity, but its mechanisms are elusive. Here, we explore the role of superoxide, nitric oxide (NO), and peroxynitrite in DOX-induced cell death using both in vivo and in vitro models
American Physiological Society.
-
34. Hydrogen Peroxide Production in Streptococcus pyogenes: Involvement of Lactate Oxidase and Coupling with Aerobic Utilization of Lactate
Streptococcus pyogenes strains can be divided into two classes, one capable and the other incapable of producing H2O2 (M. Saito, S. Ohga, M. Endoh, H. Nakayama, Y. Mizunoe, T. Hara, and S. Yoshida, Microbiology 147:2469-2477, 2001). In the present study, this dichotomy was shown to parallel the presence or absence of H2O2-producing lactate oxidase activity i
American Society for Microbiology.
-
35. Receptor “cross talk” in innate immunity
Toll-like receptors (TLRs) recognize microbial molecular signatures and can initiate innate immune responses against invading pathogens. A new study reports how TLR2 expression by endothelia is locally upregulated by the action of activated polymorphonuclear neutrophils via an unprecedented mechanism involving cell-cell interaction and NAD(P)H oxidase. The r
American Society for Clinical Investigation.
-
36. PROLINE OXIDASES IN HANSENULA SUBPELLICULOSA
Ling, Chung-Mei (Illinois Institute of Technology, Chicago), and L. R. Hedrick. Proline oxidases in Hansenula subpelliculosa. J. Bacteriol. 87:1462–1470. 1964—Cells of Hansenula subpelliculosa can use l-proline as a carbon and a nitrogen source after a 6- to 8-hr induction period. However, they cannot use l-glutamate as both nitrogen and carbon sources u