Question

Which bond is responsible for the stability of a-helix structure?​

Answer 1

Explanation:

hydrogen bonds

The α helix is stabilized by hydrogen bonds between the NH and CO groups of the main chain. In particular, the CO group of each amino acid forms a hydrogen bond with the NH group of the amino acid that is situated four residues ahead in the sequence (Figure 3.30).

Answer 2

hydrogen bonds/=the a-helix is a right-handed helix white the peptide bonds located on the inside and the side chains extending outward.it is stabilized by the regular formation of hydrogen bonds parallel to the axis of the helix,they are formed between the amino and carbonyl groups of every fourth peptide bond.