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NAD is commonly called by other names, including NAD+ or NADH. These are both forms of NAD — NAD+ is the positively charged form, which has lost an electron, and NADH is the neutral form which ...
UV absorption spectra of NAD + and NADH [image reference needed] Both NAD + and NADH strongly absorb ultraviolet light because of the adenine. For example, peak absorption of NAD + is at a wavelength of 259 nanometers (nm), with an extinction coefficient of 16,900 M −1 cm −1. NADH also absorbs at higher wavelengths, with a second peak in UV ...
[10] While under standard conditions malate cannot reduce the more electronegative NAD +:NADH couple, in the cell the concentration of oxaloacetate is kept low enough that Malate dehydrogenase can reduce NAD + to NADH during the citric acid cycle. Fumarate + 2 H + + 2 e − → Succinate +0.03 [9] O 2 + 2H + + 2e − → H 2 O 2 +0.30
NADH + H + + acceptor ⇌ NAD + + reduced acceptor. NADH dehydrogenase is a flavoprotein that contains iron-sulfur centers. NADH dehydrogenase is used in the electron transport chain for generation of ATP. The EC term NADH dehydrogenase (quinone) (EC 1.6.5.11) is defined for NADH dehydrogenases that use a quinone (excluding ubiquinone) as the ...
Nicotinamide adenine dinucleotide phosphate, abbreviated NADP [1] [2] or, in older notation, TPN (triphosphopyridine nucleotide), is a cofactor used in anabolic reactions, such as the Calvin cycle and lipid and nucleic acid syntheses, which require NADPH as a reducing agent ('hydrogen source').
In biochemistry, NAD(P) + transhydrogenase (Si-specific) (EC 1.6.1.1) is an enzyme that catalyzes the chemical reaction. NADPH + NAD + NADP + + NADH. Thus, the two substrates of this enzyme are NADPH and NAD +, whereas its two products are NADP + and NADH. This enzyme participates in nicotinate and nicotinamide metabolism.
In enzymology, a glycerol-3-phosphate dehydrogenase (NAD +) (EC 1.1.1.8) is an enzyme that catalyzes the chemical reaction. sn-glycerol 3-phosphate + NAD + glycerone phosphate + NADH + H + The two substrates of this enzyme are sn-glycerol 3-phosphate and NAD +, whereas its 3 products are glycerone phosphate, NADH, and H +.
The 3 substrates of this enzyme are sn-glycerol 3-phosphate, NAD +, and NADP +, whereas its 4 products are glycerone phosphate, NADH, NADPH, and H +. This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with NAD + or NADP + as acceptor.
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