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Figure 4.
Comparison of polymerase active sites from the β-NT and
classical superfamilies. The active sites and DNA substrates are
shown from PolC (colored as in Fig. 1) and TaqDnaE (white; PDB
ID code 3E0D) C family polymerases (A), Polβ (PDB ID code
2FMP), an X family polymerase (B), and RB69 (PDB ID code 1IG9),
a B family polymerase (C). (B and C) Palms are colored magenta,
and fingers are colored blue.
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