Explain the functions of enzymes in DNA replication.
Enzyme / Protein | Specific Function |
DNA pol I | Removes RNA primer and replaces it with newly synthesized DNA. |
DNA pol III | The main enzyme adds nucleotides in the 5′-3′ direction. |
Helicase | It opens the DNA helix by breaking hydrogen bonds between the nitrogenous bases. |
Ligase | Seals the gaps between the Okazaki fragments to create one continuous DNA strand |
Primase | Synthesizes RNA primers needed to start replication |
Sliding Clamp | Helps to hold the DNA polymerase in place when nucleotides are being added |
Topoisomerase | Helps relieve the strain on DNA when unwinding by causing breaks, and then resealing the DNA |
Tag:helicase, ligase, primase, topoisomerase