Which of the following interactions holds the $\alpha$-helix and the $\beta$-pleated sheet into its unique folding pattern? A) covalent bonding between cysteines (-CH₂SH) B) hydrogen bonding between serines (-CH₂OH) C) hydrogen bonding between nitrogens and oxygens in the amino acid backbone D) ionic bonding between acidic and basic amino acid side chains E) hydrophilic interactions

Question

Quizplus · Accepted Answer

The unique folding pattern of protein structures, such as the alpha helix and beta pleated sheet, is held together primarily by hydrogen bonding between nitrogens and oxygens in the backbone of the amino acid chain. Covalent bonding between cysteines (disulfide bonds) and ionic bonding between acidic and basic amino acid side chains can also contribute to the stability of protein structure, but they are not the primary interactions that dictate the folding pattern. Hydrogen bonding between serines or hydrophilic interactions are not exclusive to these specific structures and do not play a major role in their folding pattern.

Which of the Following Interactions Holds The α\alphaα -Helix and The β\betaβ

Which of the Following Interactions Holds The $\alpha$ -Helix and The $\beta$