See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

Since the tripeptide on hydrolysis gave two dipeptides glu-cys and cys-gly. Hence, cystine must be in between glutamic acid and glycine as given below H3N CH CH2CH2COOH C O NH CH2 CH2 HS C O NH CH2 C O O glu-cys-gly AITS-OT-PCM(Sol.)-JEE(Main)/2021 Ltd., FIITJEE House, 29-A, Kalu Sarai, Sarvapriya Vihar, New Delhi -110016, Ph 46106000, 26569493, Fax 26513942 website: www.fiitjee.com 10