Ketohexose A ketose SUGAR with six carbon atoms, e.g. fructose.

种六碳酮糖。例如果糖。

Glucose cyclizes to form asix- membered pyranose ring whilst five –carbon surgars and six-carbon ketose sugars (ketohexoses) such as fructnose rings.

环状结构 四碳糖和糖能环化，醛或酮与糖碳原子上羟反应。

Transketolase is the key enzyme of pentose-phophate pathway, catalyses transfer of a two-carbon fragment from a ketolase (donor substance) to an aldose (acceptor substance).

摘要转酮醇酶是磷酸戊糖途径关键酶，催化二碳单元在酮糖（供体）和醛糖（受体）间转移。