Match the protein to the descriptions.

The protein to consider here is alpha-keratin.

There may be several answers for some of these. Select all that apply.

=> No partial credit.


contains intrachain hydrogen bonds


contains heptad repeats


contains Glycine at every 3rd residue


contains hydroxyproline


contains left-handed helices


contains interchain hydrogen bonds


every second residue is Gly

My answers are;contains heptad repeats,contains hydroxyproline,contains left-handed helices,and contains interchain hydrogen bonds) am I correct ? Thanks

Yes, you are correct. Alpha-keratin is a fibrous protein found in hair, nails, and skin. It contains heptad repeats, which are a recurring pattern of seven amino acids in its structure. It also contains hydroxyproline, which is a modified amino acid that is important for maintaining the structure and stability of the protein. Alpha-keratin forms left-handed helices, which contribute to its strength and flexibility. It also contains interchain hydrogen bonds, which help to stabilize the protein's structure. However, it does not contain intrachain hydrogen bonds or have Glycine at every 3rd residue, so those are not correct.