Abstract: Glutamine phosphoribosylpyrophosphate amidotransferase(GPATase) is the key regulatory enzyme in purine biosynthesis.It catalyses the first step in de novo pathway.

• 摘 要： 谷氨酰胺磷酸核糖焦磷酸转酰胺酶是生物．体内嘌呤产物合成途径的关键酶，负责催化全合成途径的第一步反应。