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. 2012 Jul 11;7(7):e40581. doi: 10.1371/journal.pone.0040581

Figure 4. Positions of cations in the palm domain of hand-shaped DNA-dependent polymerases.

Figure 4

The yellow spheres indicate catalytic ions, and the green spheres indicate cations that are positionally distinct from the catalytic cations. Structural alignments of (A) A family DdDps, (B) B family DdDps, (C) Y family DdDps, and (D) DdRps. The aligned cations are depicted with the polypeptide chain of the catalytic region from (A) Bacillus stearothermophilus DdDp (PDBid: 2BDP), (B) bacillus phage φ29 DdDp (PDBid: 2PYJ), (C) human DNA polymerase κ (PDBid: 2OH2), and (D) enterobacteria phage T7 DdRp (PDBid: 1S76).