The alphahelix found in some proteins a is due primarily to

The alpha-helix found in some proteins:

a) is due primarily to some disulfide bridges

b) is due primarily to hydrogen bonding associated with the peptide bond

c) is due to their DNA content

d) is due to their serine content

Solution

The correct answer is “b) is due primarily to hydrogen bonding associated with the peptide bond”.

What is alpha helix?

The alpha helix is a common motif in the secondary structure of proteins and is a righthand-coiled or spiral conformation (helix) in which every backbone N-H group donates a hydrogen bond to the backbone C=O group of the amino acid located three or four residues earlier along the protein sequence.