y is pro insulin so called? how is It different from insulin?
Proinsulin is a protein molecule . It is a precursor hormone, or prohormone, to insulin. Insulin is produced by the beta cells,Proinsulin is composed of 86 amino acids. It has three domains, or distinct peptide chains: alpha chain, beta chain, and C-peptide.
Mature insulin is made up of 51 amino acids
Mature insulin is made up of 51 amino acids