In a normal cellular protein, where would you expect to find a hydrophobic amino acid like valine? A. In the interior of the folded protein, away from water.

B. On the exterior surface of the protein, interacting with water.

C. In the transmembrane portion interacting with lipid fatty acid chains.

D. In the interior of the folded protein, away from water, or in a transmembrane portion interacting with lipid fatty acid chains.
E. Anywhere in the protein, with equal probability.