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

一种六碳的糖。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 四碳糖和更大的糖能环，与糖的另一碳原子上的羟反应。

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).

摘要转醇酶是磷酸戊糖途径的关键酶，催二碳单元在糖（供体）和糖（受体）间的转移。