Soluble cell-free extracts of actinomycete S4 grown on media containing mevalonate catalyze acetoacetate formation from mevalonate, mevaldate, and beta-hydroxy-beta-methylglutaryl-coenzyme A (CoA). Conversion of mevalonate to acetoacetate involves formation of free beta-hydroxy-beta-methylglutaryl-CoA, but not free mevaldate. The reaction favors mevalonate oxidation, and nicotinamide adenine di...

INTRODUCTION ...... ......... .......... .................. 83 BIOSYNTHESIS OF NICOTINAMIDE ADENINE DINUCLEOTIDE 83 Anaerobic De Novo Pathways .. ...... .... .... ... 84 Dihydroxyacetone phosphate-aspartate pathway 84 Formate-aspartate pathway .............................................. 87 Aerobic Tryptophan Catabolic Pathway 87 Genetics of Anaerobic Nicotinamide Adenine Dinucleotide Biosynt...

The ability of hydrolytic products of coenzyme F420 to substitute for F420 in the hydrogenase and nicotinamide adenine dinucleotide phosphate-liniked hydrogenase systems of Methanobacterium strain M.o.H. was kinetically determined. The nicotinamide adenine dinucleotide phosphate-linked hydrogenase system was employed to quantitate the levels of F420 in a number of methanogenic bacteria as well ...

Submitochondrial particles from mung bean mitochondria (Phaseolus aureus) are able to catalyze an energy-linked reduced nicotinamide adenine dinucleotide-nicotinamide adenine dinucleotide phosphate transhydrogenase reaction supported by ATP or by aerobically generated high energy intermediates. The energy transfer pathway appears to differ from that utilized for oxidative phosphorylation.Mung b...

Reactive oxygen species (ROS) in the brain are thought to contribute to the neuropathogenesis of hypertension by enhancing sympathetic nervous system activity. The nucleus tractus solitarius (NTS), which receives afferent input from baroreceptors, has an important role in cardiovascular regulation. reduced nicotinamide-adenine dinucleotide phosphate oxidase is thought to be a major source of RO...

We suggest that varicocele leads to male factor infertility by a mechanism involving underperfusion of the testis, a shortfall in glucose supply to the tissue, decreased flux through the pentose phosphate pathway, lowering of the reduced nicotinamide-adenine dinucleotide phosphate/oxidized nicotinamide-adenine dinucleotide phosphate ratio and the supply of glutathione to the antioxidant systems...

chronic granulomatous disease (cgd) is a rare primary immunodeficiency disorder due to a genetic defect in one of the components of nicotinamide adenine dinucleotide phosphate (nadph) oxidase complex. this complex is composed of membrane-bound gp91- phox and p22- phox subunits, and cytosolic subunits consisting of p47- phox , p67- phox , and p40- phox . a mutation in cybb gene encoding gp91- ph...

Previous studies in our laboratory (1) have shown that intact ascites cells incorporate nicotinamide-14C into both nicotinamide adenine dinucleotide and nicotinic acid adenine dinucleotide. It was also shown that the specific activity of the nicotinamide adenine dinucleotide increased with increasing concentrations of nicotinamide-14C. High levels of nicotinic acid-r4C, on the other hand, did n...