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GAPDH催化3-磷酸甘油醛氧化生成1,3-二磷酸甘油酸,是糖酵解途径的关键酶,与糖异生途径、体内血糖浓度的维持和糖尿病的发生密切相关,在机体糖、脂、蛋白代谢紊乱疾病中发挥重要作用。 测定原理:3-磷酸甘油酸激酶催化三磷酸甘油酸和ATP生成1,3二磷酸甘油酸。GAPDH逆向催化1,3二磷酸甘油酸和NADH生成3磷酸甘油醛、无机磷和NAD⁺,340nm处测定NADH的减少量可反映GADPH活性的高低。
GAPDH catalyzes the oxidation of glyceraldehyde‑3‑phosphate to 1,3‑bisphosphoglycerate and is a key enzyme in the glycolytic pathway. It is closely related to gluconeogenesis, the maintenance of blood glucose levels, and the pathogenesis of diabetes, playing an important role in diseases involving disorders of carbohydrate, lipid, and protein metabolism. Determination principle: 3‑Phosphoglycerate kinase catalyzes the conversion of 3‑phosphoglycerate and ATP to 1,3‑bisphosphoglycerate. GAPDH catalyzes the reverse reaction, converting 1,3‑bisphosphoglycerate and NADH to glyceraldehyde‑3‑phosphate, inorganic phosphate, and NAD⁺. The decrease in NADH measured at 340 nm reflects GAPDH activity.