This video tells us about the catabolism and synthesis of purines and pyrimidines. The lapse covers the site of occurrence and the enzymes involved in the reaction together the associated disorders and their treatment TIMELINE: 0:01 Introduction 0:25 Catabolism 1:25 Table for catabolism 1:55 Steps involved 2:09 Step-1(Degradation of cytosine and uracil) 3:20 Hydrolysis 4:23 Step-2 thymine degradation 5:59 Disorders of pyramidal metabolism 6:53 Orotic aciduria 7:59 Treatment 8:19 Reye's syndrome 9:39 End