Differentiate between pro-insulin and mature insulin.

Explanation

### Step-by-Step Text Solution

1. **Definition of Pro-Insulin**: Pro-insulin is a precursor molecule to insulin. It is a single-stranded polypeptide that consists of three chains: the A chain, the B chain, and the C chain.

2. **Structure of Pro-Insulin**: In pro-insulin, the A chain and B chain are connected by the C chain. The structure contains three pairs of disulfide bonds that stabilize the molecule. The C chain is integral to the structure but is not present in the final form of insulin.

3. **Conversion to Mature Insulin**: During the maturation process, pro-insulin is converted into mature insulin. This involves the cleavage of the C chain, which separates the A and B chains.

...