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. 2010 Jul-Sep;1(1):2–8. doi: 10.4161/adna.1.1.10952

Figure 5.

Figure 5

Hydrogen bonding interactions between the terminal flipped out cytosine base in duplex 1 with the cobalt hexamine residue. Three hydrogen bonds are present between the cobalt complex and the pyrimidine base, which further interacts with neighboring phosphate groups. The cobalt hexamine complex not only stabilizes the flipped out base but also the packing arrangement through hydrogen bonding interactions between different chains.