why is proinsulin so called? how is insulin is differente from it Share with your friends Share 0 Jahirul Mazumder answered this Kindly refer the link below: https://www.meritnation.com/ask-answer/question/y-is-pro-insulin-so-called-how-is-it-different-from-in/biotechnology-and-its-applications/7029398 0 View Full Answer Devprabha answered this proinsulin is immature insulin wid C peptide...on removal of C peptide mature functional insulin is formed... 1