Some proteins have α helices, some have β sheets, and still others have a combination of both.What makes it possible for proteins to have these common structural elements?

Question

Quizplus · Accepted Answer

α helices and β sheets are both stabilized by hydrogen bonding between amino acid residues along the protein backbone. Therefore, D is the best choice. While specific amino acid sequences and side-chain interactions can also contribute to protein structure, they are not specifically responsible for the formation of α helices and β sheets. The hydrophobic-core interactions also contribute to protein stability, but are not directly involved in the formation of these structural elements.

Some Proteins Have α Helices, Some Have β Sheets, and Still