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. Author manuscript; available in PMC: 2008 Sep 8.
Published in final edited form as: Anal Chem. 2007 May 18;79(12):4636–4647. doi: 10.1021/ac070145p

Figure 3.

Figure 3

ESI-mass spectra showing solutions containing the duplex d(GCGGATATATGGCG/CGCCATATATCCGC) (a) before reaction with KMnO4, (b) after 4 min. reaction with KMnO4, and (c) after 30 min. reaction with KMnO4. Spectral enlargements of the region around m/z 1700 - 1730 are shown in the inset. Sodium adducts are labeled with an asterisk. Ions containing oxidized thymines are labeled with ▼, with the number in parenthesis indicating the number of oxidation adducts. The d(GCGGATATATGGCG) single strand is abbreviated as ss1, while d(CGCCATATATCCGC) is ss2.