Prokaryote DNA replication subunits

In summary, DNA replication subunits in prokaryotes have the main function of assisting in the process of DNA replication and ensuring the accuracy of the newly formed DNA molecules. There are three types of DNA replication subunits found in prokaryotes: DNA polymerase, DNA helicase, and DNA primase. DNA polymerase adds new nucleotides to the growing DNA strand while DNA helicase unwinds and separates the two strands of the DNA molecule. These subunits also have proofreading abilities and a high fidelity to maintain accuracy. However, mistakes can still occur during DNA replication, leading to mutations with varying effects on the organism.
  • #1
hidemi
208
36
Homework Statement
Which factor does NOT consume energy by breaking phosphoanhydride bonds?
A) the action of DnaB
B) the action of DnaG
C) DNA gyrase
D) TUS/Ter binding
E) DNA ligase

The answer is D
Relevant Equations
None
Why (A) and (B) need to break phosphoanhydride bonds? Thanks
 
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  • #2
Do you know the functions of DnaB and DnaG?
 
  • #3
Thanks for your hint. I finally understood!
 

1. What are the main subunits involved in prokaryote DNA replication?

The main subunits involved in prokaryote DNA replication are DNA polymerase, helicase, primase, and DNA ligase.

2. What is the function of DNA polymerase in prokaryote DNA replication?

DNA polymerase is responsible for adding nucleotides to the growing DNA strand during replication.

3. How does helicase contribute to prokaryote DNA replication?

Helicase unwinds the double-stranded DNA during replication, creating a replication fork for DNA polymerase to access.

4. What is the role of primase in prokaryote DNA replication?

Primase is responsible for creating RNA primers that DNA polymerase can use to initiate replication.

5. How does DNA ligase participate in prokaryote DNA replication?

DNA ligase joins the Okazaki fragments on the lagging strand during replication, creating a continuous DNA strand.

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