Problem: Which activities, listed as numbers 1 to 4, does E. coli DNA polymerase I have?1. 5' to 3' polymerase2. 3' to 5' poolymerase3. 5' to 3' exonuclease4. 3' to 5' exonucleaseA. 1 and 2B. 1, 2, and 4C. 1, 2, and 3D. 1, 3, and 4 E. 1 and 4

FREE Expert Solution

The DNA polymerase I is the most extensively studied DNA polymerase. Being a polymerase enzyme, it is generally known to have a polymerase activity synthesizing in the 5' to 3' direction with the same limitation of not being able to create polynucleotides in the 3' to 5' direction.

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Problem Details

Which activities, listed as numbers 1 to 4, does E. coli DNA polymerase I have?

1. 5' to 3' polymerase

2. 3' to 5' poolymerase

3. 5' to 3' exonuclease

4. 3' to 5' exonuclease


A. 1 and 2

B. 1, 2, and 4

C. 1, 2, and 3

D. 1, 3, and 4 

E. 1 and 4

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