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在色谱分析、有机合成和交叉偶联反应领域已被 0 篇同行评审文献引用。
GCS(EC 2.4.1.11)催化UDPG和葡萄糖残基生成糖原和UTP,以α-1,4-糖苷键相连延长糖链,是肝和肌肉糖原合成酶的限速酶,是胰岛素作用的主要靶酶,对糖代谢的调节和血糖稳态的维持具有重要作用。 测定原理:GCS催化UDPG和葡萄糖残基生成糖原和UDP,丙酮酸激酶和乳酸脱氢酶进一步依次催化NADH氧化生成NAD⁺,在340nm下测定NADH下降速率,即可反映GCS活性。
GCS (EC 2.4.1.11) catalyzes the transfer of glucose residues from UDPG to a growing glycogen chain via α-1,4-glycosidic bonds, producing glycogen and UTP. It is the rate-limiting enzyme of glycogen synthase in the liver and muscle, a primary target enzyme of insulin action, and plays a crucial role in the regulation of glucose metabolism and the maintenance of blood glucose homeostasis. Assay Principle: GCS catalyzes the reaction of UDPG with glucose residues to generate glycogen and UDP. Pyruvate kinase and lactate dehydrogenase then sequentially catalyze the subsequent oxidation of NADH to NAD⁺. The decrease in NADH measured at 340 nm reflects the activity of GCS.