Question

Out of the following, which type of interaction is responsible for the stabilisation of the α-helix structure of proteins?

Options

• Ionic bonding

• Hydrogen bonding

• Van der Waals forces

• Covalent bonding

Answer 1

Hydrogen bonding

Explanation:

The α-helix structure of the protein is stabilized by hydrogen bonding between the – NH – and \[\begin{array}{cc}
\ce{O}\phantom{...}\\
||\phantom{...}\\
\ce{- C - NH}
\end{array}\] and CO groups of the main chain.