Protein- Structure

Question 1

Primary

Answer 1

Unique sequence of amino acid help together by peptide bonds

Question 2

Secondary

Answer 2

• Hydrogen bonds form between the amino and carboxyl group
• This causes the chain to coil either into an alpha helix or a beta-pleated sheet structure

Question 3

Tertiary

Answer 3

• Polypeptide chain folds to create a 3D structure
• Introduction of disulphide and ionic bonding, as well as hydrophilic and hydrophobic interactions

Question 4

Quarternary

Answer 4

• Involves two or more polypeptide chains
• Can also involve the addition of prosthetic groups