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(A) Chemical structure of neocarzinostatin-gb; (B) complex of a DNA with neocarzinostatin-gb (PDB code: 1KVH); (C) chemical structure of neocarzinostatin-glu; and (D) complex of DNA with neocarzinostatin-glu (PDB code: 1MP7). The orange structure represents the small molecule; the purple structure represents the backbone of nucleic acid; the blue and red atoms in the molecule represent nitrogen and oxygen atoms, respectively.
