Putrescene - a polyamine is formed by decarboxylation of:: (A) Arginine, (B) Ornithine, (C) Citrulline, (D) Adenine
Answer is B. Ans: B (Ornithine)Ref: Harper's Illustrated Biochemistry,28th editionExplanation:Polyamines include putrescine, spermidine, spermine.Ornithine is a major precursor for synthesis of polyamines.Conversion of ornithine to putrescine is catalyzed by Ornithine Decarboxylase. (See figure)