nicotinamide/majs

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Properties and regulation of leaf nicotinamide-adenine dinucleotide phosphate-malate dehydrogenase and 'malic' enzyme in plants with the C4-dicarboxylic acid pathway of photosynthesis.

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1. NADP-malate dehydrogenase and ;malic' enzyme in maize leaf extracts were separated from NAD-malate dehydrogenase and their properties were examined. 2. The NADP-malate dehydrogenase was nicotinamide nucleotide-specific but otherwise catalysed a reaction comparable with that with the NAD-specific

The Involvement of Aspartate and Glutamate in the Decarboxylation of Malate by Isolated Bundle Sheath Chloroplasts from Zea mays.

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Aspartate or glutamate stimulated the rate of light-dependent malate decarboxylation by isolated Zea mays bundle sheath chloroplasts. Stimulation involved a decrease in the apparent K(m) (malate) and an increased maximum velocity of decarboxylation. In the presence of glutamate other dicarboxylates

Bilevel disulfide group reduction in the activation of c(4) leaf nicotinamide adenine dinucleotide phosphate-malate dehydrogenase.

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The time course of thioredoxin-mediated reductive activation of isolated Zea mays nicotinamide adenine dinucleotide phosphatemalate dehydrogenase is highly sigmoidal in nature. We examined the factors affecting these kinetics, including the thiol-disulfide status of unactivated and activated forms

Oxidation of reduced nicotinamide adenine dinucleotide phosphate by isolated corn mitochondria.

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Isolated corn (Zea mays L.) mitochondria were found to oxidize reduced nicotinamide adenine dinucleotide phosphate in a KCl reaction medium. This oxidation was dependent on the presence of calcium or phosphate or both. Strontium and manganese substituted for calcium, but magnesium or barium did not.

Hepatocyte Nicotinamide Adenine Dinucleotide Phosphate Reduced Oxidase 4 Regulates Stress Signaling, Fibrosis, and Insulin Sensitivity During Development of Steatohepatitis in Mice.

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OBJECTIVE Reactive oxidative species (ROS) are believed to be involved in the progression of nonalcoholic steatohepatitis (NASH). However, little is known about the sources of ROS in hepatocytes or their role in disease progression. We studied the effects of nicotinamide adenine dinucleotide

Comparative proteomic analysis revealing the complex network associated with waterlogging stress in maize (Zea mays L.) seedling root cells.

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Soil waterlogging is one of the major abiotic stresses affecting maize grain yields. To understand the molecular mechanisms underlying waterlogging tolerance in maize, the iTRAQ LC-MS/MS technique was employed to map the proteomes of seedling root cells of the A3237 (tolerant inbred) and A3239

Nicotinamide adenine dinucleotide phosphate photoreduction from water by agranal chloroplasts isolated from bundle sheath cells of maize.

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Photoreduction of NADP from water in agranal chloroplasts isolated from the leaf bundle sheath cells of Zea mays (var. DS 606A) or Sorghum bicolor (var. Texas 610) was dependent upon addition of plastocyanin as well as ferredoxin. Activity was further increased by the addition of ferredoxin

Changes in the Conversion Rate of Tryptophan-nicotinamide According to Dietary Fat and Protein Levels.

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The effects of dietary fat and protein levels on the conversion of Trp-Nam were investigated. In rats fed with 20% casein diets, the Trp-Nam conversion ratio [(urinary excretion of Nam + MNA + 2-Py + 4-Py in μmol/day)/(daily Trp intake during urine collection in μmol/day) × 100] was about 4.3% for

Some properties of two forms of nitrite reductase from corn (Zea mays L.) scutellum.

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Nitrite reductase from corn scutellum-a non-chlorophyllous tissue-can use methyl viologen, benzyl viologen or ferredoxin as electron donor. Little or no reduction occurs with nicotinamide or flavin nucleotides. Activity is inhibited by p-chloromercuribenzoate and by cyanide. Organic chelates, with

Glyceraldehyde-3-Phosphate Dehydrogenase in Greening Zea mays L. Leaves.

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Nicotinamide adenine dinucleotide phosphate (NADP)-dependent glyceraldehyde-3-phosphate dehydrogenase (GPDH) (EC 1.2.1.13), a chloroplast enzyme, had low activity in etioplasts of maize leaves. A light dependent increase of enzyme activity of 7-day-old etiolated seedlings showed a lag period of

Photosynthetic flexibility in maize exposed to salinity and shade.

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C4 photosynthesis involves a close collaboration of the C3 and C4 metabolic cycles across the mesophyll and bundle-sheath cells. This study investigated the coordination of C4 photosynthesis in maize plants subjected to two salinity (50 and 100mM NaCl) treatments and one shade (20% of full sunlight)

Mitochondrial heredity: a determinant in the toxic response of maize to the insecticide methomyl.

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Mitochondria isolated from etiolated Texas male-sterile (TMS) cytoplasm maize (Zea mays L.) seedlings were adversely affected by methomyl (Lannate, 90 wettable powder), while those isolated from normal-fertile seedlings were not. In a manner analogous to that reported for Bipolaris

Structural studies on corn nitrate reductase: refined structure of the cytochrome b reductase fragment at 2.5 A, its ADP complex and an active-site mutant and modeling of the cytochrome b domain.

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The refined crystal structures of the recombinant cytochrome b reductase fragment of corn (Zea mays) nitrate reductase, its ADP complex and the active-site mutant Cys242Ser are reported here. The native structure has been refined at 2.5 A resolution to a crystallographic R-factor of 18.7% with

Comparative analysis of thylakoid protein complexes in the mesophyll and bundle sheath cells from C3 , C4 and C3 -C4 Paniceae grasses.

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To better understand the coordination between dark and light reactions during the transition from C₃ to C₄ photosynthesis, we optimized a method for separating thylakoids from mesophyll (MC) and bundle sheath cells (BSCs) across different plant species. We grew six Paniceae

Regulation of the expression of NADP-malic enzyme by UV-B, red and far-red light in maize seedlings.

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The induction of nicotinamide adenine dinucleotide phosphate-malic enzyme (NADP-ME) in etiolated maize (Zea mays) seedlings by UV-B and UV-A radiation, and different levels of photosynthetically active radiation (PAR, 400-700 nm) was investigated by measuring changes in activity, protein quantity

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