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. Author manuscript; available in PMC: 2010 Oct 22.
Published in final edited form as: Anticancer Agents Med Chem. 2008 May;8(4):358–367. doi: 10.2174/187152008784220311

Figure 3.

Figure 3

Processing of DNA strand break termini by PNK. PNK catalyzes the phosphorylation of 5’-hydroxyl (OH) termini and dephosphorylation of 3’-phosphate (P) termini so that subsequent nucleotide insertion and strand rejoining can be mediated by DNA polymerases and ligases, respectively.