Description: Plays an important role in growth control. Its major role in stimulating body growth is to stimulate the liver and other tissues to secrete IGF-1. It stimulates both the differentiation and proliferation of myoblasts. It also stimulates amino acid uptake and protein synthesis in muscle and other tissues. (www.uniprot.org) Produced in E.coli as a single, non-glycosylated, polypeptide chain containing 191 amino acids.