DNA polymerase II
（重定向自Pol II）
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![DNA Polymerase II Repair Active Site (PDB ID: 3K5M)](/Images/godic/202502/03/DNA_Pol_II_Active_Site2346.png")
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DNA polymerase II (also known as DNA Pol II or Pol II) is a prokaryotic DNA-Dependent DNA polymerase encoded by the PolB gene.
DNA Polymerase II is an 89.9-kDa protein and is a member of the B family of DNA polymerases. It was originally isolated by Thomas Kornberg in 1970, and characterized over the next few years.