Di sulphide bonds

Question 1

Disulfide bonds are

Answer 1

These bonds are the strongest within a protein, but occur less frequently, and help stabilise the proteins

Question 2

Disulfide bonds are………… bonds that form between …………. R groups (as this is the only amino acid with an available sulfur atom in its R group)

Answer 2

strong covalent

two cysteine

Question 3

These are also known as disulfide bridges(when they stabilise proteins) they can be broken by what

Answer 3

Can be broken by reduction

Question 4

Disulfide bonds are common in proteins

Answer 4

secreted from cells eg. insulin