A. Number and types of proteins within a protein complex B. alpha-helix C. Molecular chaperones may be used to create this D. The sequence of the polypeptide chain E. Independent structural areas of the peptide F. Formed by hydrogen bonding within polypeptide backbone G. Non-protein molecule that increases function of protein H. Created by the formation of interactions between side chains. I. May have similar active site but distinct activities in cell.