Question

Why is DNA polymerase 3 important?

Answer 1

DNA polymerase 3:

1. DNA polymerase 3 is a polymerising enzyme found in prokaryotes.
2. It is the major catalysing enzyme in the polymerisation of DNA ($5\text{'}\to 3\text{'}$) during the replication process.
3. In addition to polymerase activity, it also has $3\text{'}\to 5\text{'}$exonuclease activity.
4. While other DNA enzymes are also involved in DNA repair, removal of primer, and filling the gaps in lagging strand.