Tertiary structure can be described as the overall three-dimensional structure of the protein. Interactions between amino acid side chains (R-groups of amino acids) in protein determine its tertiary structure. These interactions play an important role in stabilizing 3-D protein structure and they involve: ionic bonds, hydrogen bonds, van der Waals interactions, covalent bonds, and hydrophobic interactions.
<span>The platypus lays eggs like a reptile is an additional piece of information will be most helpful to Julia to properly build her phylogenetic tree. </span>
