amino acids

Question 1

deduce type of interaction between lysine R group and aspartic acid R group

Answer 1

ionic bond

Question 2

explain why interaction between 2 cysteine R groups differs from strength of interaction between serine and aspartic acid R group

Answer 2

• Two Cys R groups form a disulfidebridge
• Ser and Asp R groups form Hydrogen bonds
• Disulfide bridges are stronger than Hydrogen bonds
• Because disulfide bridges are covalent bonds (while Hydrogen bonds aren’t