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What is the difference between RNA pol 1, 2 and 3?

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Eukaryotic RNA polymerases are of three types -RNA polymerase 1,RNA polymerase 2 and RNA polymerase 3.RNA polymerase is an enzyme that catalyses the synthesis of RNA from DNA. read more

Eukaryotic RNA polymerases are of three types -RNA polymerase 1,RNA polymerase 2 and RNA polymerase 3.RNA polymerase is an enzyme that catalyses the synthesis of RNA from DNA. These are three RNA polymerases differ from each other in their location within the nucleus and in the kinds of RNA they synthesise. read more

The key difference between DNA polymerase 1 2 and 3 mainly relies on the prime function of each enzyme. DNA polymerase 3 is the main enzyme which catalyzes the DNA synthesis, while DNA polymerase 1 and 2 are involved in DNA repairing and proofreading. read more

1. All the three dna polymerases have 5'-3' polymerase activity and 3'-5' exonuclease activity. But dna pol 1 has additional 5'-3' exonuclease activity and rna dependent dna polymerase activity. 2. Dna pol 3 is the major enzyme in dna replication. It has a clamp like structure that holds the dna strands and thus increases processivity of dna. 3. read more

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