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ELF analysis for the active site of Polλ with Mg2+ (left) and Ni2+ (right) occupying the catalytic and nucleotide binding metal sites. Reproduced from Chaudret, R., Piquemal, J.-P., and Cisneros, G. A. (2011) Correlation between electron localization and metal ion mutagenicity in DNA synthesis from QM/MM calculations. Phys. Chem. Chem. Phys.13, 11239–11247, with permission from the PCCP Owner Societies.80
