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. 2012 Dec 27;8(12):e1002851. doi: 10.1371/journal.pcbi.1002851

Figure 2. Three truncated systems, including Lys167 (A), Lys359 (B) and Arg174 (C) separately, were used for quantum mechanics (QM) calculations.

Figure 2

Each system contains the phosphate and sugar of the primer terminus adenosine nucleotide, Asp328, Asp233, crystal water, two Mg2+ ions, rCTP molecule.