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Why are some proteins soluble in water?
How do nonpolar amino acids contribute to the structure of a protein?
Nonpolar amino acids tend to cluster together in the interior of a protein, where they are shielded from contact with water molecules. This can help to stabilize the structure of the protein by reducing the protein's exposure to the aqueous environment. Additionally, nonpolar amino acids can participate in hydrophobic interactions with other nonpolar amino acids, which can help to hold the protein's overall structure together.