己糖激酶或葡萄糖激酶在肝细胞中对葡萄糖的6个碳磷酸化使葡萄糖转化为D-葡萄糖-6 - 磷酸。 D-葡萄糖-6 - 磷酸可以被存储在为肝脏或以糖原形式存于肌肉tiβue，直到身体需要额外的葡萄糖时在那里将被糖原磷酸化酶分解proceβed和释放。 Glucose is converted to D-Glucose 6-phosphate by phosphorylation of the 6′ carbon by either hexokinase or glucokinase in liver cells. D-Glucose 6-phosphate can be stored in the liver or muscle tiβue as glycogen until the body needs additional glucose where it will be proceβed by glycogen phosphorylase and released.