Chemistry - Biomolecules Question with Solution | TestHub

The helical structure of proteins or the alpha helix is the secondary structure of proteins and it is stabilized by hydrogen bonds. In helical structure, the carbonyl oxygen atoms in $\mathrm{C}=$ $\mathrm{O}$ points in one direction, towards the amide hydrogen atoms in $\mathrm{N}-\mathrm{H}$ groups, 4 residues away.