Frederick Sanger sequenced insulin, the first protein to have its amino acid sequence determined. This achievement was pivotal in the study of proteins and molecular biology.
| List I | Functional Group | List II Description |
|---|---|---|
| A | Hydroxyl | I. DNA |
| B | Carboxyl | II. Proteins |
| C | Amino | III. Polar |
| D | Phosphate | IV. Fatty acids |