What type of interaction would you expect between the following R groups in the tertiary structure of a protein?

Question

Quizplus · Accepted Answer

The question is asking about the interaction between R groups in the tertiary structure of a protein. Disulfide bonds and peptide bonds are involved in forming the primary and secondary structure of a protein, respectively. Hydrogen bonds can occur between R groups in some cases, but are weaker than hydrophobic interactions. Salt bridges can occur between oppositely charged R groups, but are not as common as hydrophobic interactions in the hydrophobic core of a protein. Thus, the best choice is hydrophobic interactions, as these occur between nonpolar R groups and are important for stabilizing the hydrophobic core of a protein.

What Type of Interaction Would You Expect Between the Following