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The effects of the NAD + /NADH ratio are complex, controlling the activity of several key enzymes, including glyceraldehyde 3-phosphate dehydrogenase and pyruvate dehydrogenase. In healthy mammalian tissues, estimates of the ratio of free NAD + to NADH in the cytoplasm typically lie around 700:1; the ratio is thus favorable for oxidative reactions.
In enzymology, a fumarate reductase (NADH) (EC 1.3.1.6) is an enzyme that catalyzes the chemical reaction succinate + NAD + ⇌ {\displaystyle \rightleftharpoons } fumarate + NADH + H + Thus, the two substrates of this enzyme are succinate and NAD + , whereas its three products are fumarate , NADH , and H + .
1/2 O 2 + NADH + H + → H 2 O + NAD + The potential difference between these two redox pairs is 1.14 volt, which is equivalent to -52 kcal/mol or -2600 kJ per 6 mol of O 2. When one NADH is oxidized through the electron transfer chain, three ATPs are produced, which is equivalent to 7.3 kcal/mol x 3 = 21.9 kcal/mol.
In enzymology, a hydroxylamine reductase (NADH) (EC 1.7.1.10) is an enzyme that catalyzes the chemical reaction.. NH 3 + NAD + + H 2 O hydroxylamine + NADH + H +. The 3 substrates of this enzyme are NH 3, NAD +, and H 2 O, whereas its 3 products are hydroxylamine, NADH, and H +.
The 3 substrates of this enzyme are NADH, H +, and monodehydroascorbate, whereas its two products are NAD + and ascorbate. This enzyme belongs to the family of oxidoreductases, specifically those acting on NADH or NADPH, with a quinone or similar compound as an acceptor. The systematic name of this enzyme class is NADH: monodehydroascorbate ...
Thus, the two substrates of this enzyme are L-glutamate and NAD +, whereas its 4 products are L-glutamine, 2-oxoglutarate, NADH, and H +. This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-NH 2 group of donors with NAD + or NADP + as acceptor. This enzyme participates in glutamate metabolism and nitrogen ...
[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
Thus, the two substrates of this enzyme are ATP and NADH, whereas its two products are ADP and NADPH. This enzyme belongs to the family of transferases, specifically those transferring phosphorus-containing groups (phosphotransferases) with an alcohol group as acceptor. The systematic name of this enzyme class is ATP:NADH 2'-phosphotransferase.