SARS-CoV-1 Receptor Binding Domain (light green) and its Binding Motif (green) are responsible for binding ACE2 receptors. Each residue that creates a Hydrogen bond has been revealed to visualize both the intramolecular dynamics of protein structure as well as the intermolecular bonds that SARS-CoV-1 creates to bind ACE2 Receptors. This 3D-printed protein model was designed for scientists to study the different bonds formed by these residues.