quaternary structure « Back to Glossary Index the structure of proteins that comes from interactions between different polypeptide chains or subunits. Only multimeric/oligomeric proteins have quaternary structure. Related Articles: Layers of protein structureHow proteins take shape – amino acids, peptide bonds, & layers of protein structureThings to focus on in biochemistry (my recommendations, at least)Teaching activitiesLayers of protein structureGFP: Green Fluorescent Protein; protein structure« Back to Glossary Index