The p53 protein is a crucial tumor suppressor that monitors DNA integrity, halts cell division if damage is detected, and triggers apoptosis if the damage is irreparable. This prevents cancerous mutations.
| List I (Enzyme) | List II (Function) |
|---|---|
| (A) Cytochrome oxidase | (I) Electron transport system |
| (B) Topoisomerases | (II) Change linking number |
| (C) Cohesins | (III) DNA Replication |
| (D) PCNA | (IV) Cell cycle |
