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(a) Binding of C60 with a single-strand DNA. (b) Radial distribution of water molecules (O atom) around the hydrophobic site (line with no peak) and hydrophilic site (line with peak around r = 4) of DNA after the formation of DNA-C60 hybrid. Here the hydrophobic site is defined as one of the carbon atoms on the base ring of the binding end of the DNA; the hydrophilic site is defined as one of the phosphorus atoms along the sugar frame.
