Week 2

Question 1

What are residues?

Answer 1

Amino acids joined together into a polypeptide chains are called residues

Question 2

What helps to form the alpha helix?

Answer 2

The H-bonding between carbonyl group “n” and the hydrogen atom of amide group of the residue “n + 4” on the same polypeptide chain.

Question 3

What gives the alpha helix the cylindrical shape and the stable alpha helix structure?

Answer 3

The hydrogen bonding between carbonyl oxygen and “n+4” carbon of the residue forming the hydrogen bond

Question 4

How many amino acids are present in a stable alpha helix?

Answer 4

3.6 amino acids per rotation