This video tells us about the process by which the mechanism of purine and pyrimidine synthesis is inhibited and regulated. The plus point of this video is an overview of purine metabolism cycle and factors regulating it is given in it. TIMELINE: 0:01 Introduction 0:30 Overview of purine biosynthesis 2:44 Whole cycle of reaction 3:34 Regulation of synthesis 5:30 Inhibition of purine synthesis 7:02 End