Respuesta :
Answer:
It is associated with a sliding clamp only on the leading strand.
Explanation:
DNA polymerase must exhibit higher processivity for an efficient DNA replication process. The processivity is imparted by some specific subunits such as the beta subunit of DNA polymerase III. These subunits form a sliding clamp to allow the DNA polymerase to add a large number of nucleotides to the primer before detaching from the template.
Four copies of beta subunits of DNA polymerase III form a donuts shaped structure around each template strand of DNA and serve as a clamp. Each pair of beta subunits associated with core DNA polymerase. The function of these sub-units is to slide along DNA as replication processed. The sliding clamp does not allow the dissociation of DNA polymerase frequently and allows efficient replication of both leading and lagging strands.
The following is not a property of DNA polymerase -
- It adds dNTPs only in the 5' to 3' direction
The following is a property of DNA polymerase -
- It requires a primer to work.
- It is associated with a sliding clamp only on the leading strand.
- Its exonuclease activity is involved in proofreading
DNA polymerase
It is an enzyme used in the process of synthesis of DNA which is called replication of DNA. It ads the DNA primers to the parent chain. This enzyme acts in the 5'-3 direction and thus forms a leading strand on the chain that has a 3'-5' direction.
There are 3 DNA polymerases in use from which only the DNA polymerase II helps in replication and the rest of the two are used in the DNA proofreading.
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