代谢
在缺乏葡萄糖的情况下,果糖通过己糖激酶在细胞质中被磷酸化成果糖-6-磷酸,并且由于对果糖的高米氏常数(KM值)和对葡萄糖的低米氏常数,后者在这种酶的作用下在周围组织中优先被磷酸化。
IN ABSENCE OF GLUCOSE, FRUCTOSE IS PHOSPHORYLATED PERIPHERALLY BY HEXOKINASE TO FRUCTOSE-6-PHOSPHATE, &, ON ACCOUNT OF HIGH KM VALUE FOR FRUCTOSE & LOW KM VALUE FOR GLUCOSE, LATTER IS PREFERENTIALLY PHOSPHORYLATED BY THIS ENZYME IN PERIPHERAL TISSUES.
来源:Hazardous Substances Data Bank (HSDB)