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. Author manuscript; available in PMC: 2012 Mar 30.
Published in final edited form as: J Am Chem Soc. 2011 Mar 7;133(12):4527–4537. doi: 10.1021/ja110499a

Figure 2.

Figure 2

ESR spectra of one-electron oxidized dGuo formed by the attack of Cl2•− in the presence of electron scavenger K2S2O8 in 7.5 M LiCl/D2O at (A) pD ca. 3 (B) pD ca. 5 and (C) pD ca. 9. After exposure of these samples to the 405 nm laser (right panel) for 1 h (spectra A1 and B1) and for 3 h 30 min (spectrum A′) and 5 h 30 min (spectrum B′) to 640 nm laser (left panel), the formation of sugar radicals are observed mainly C5′• and C3′• along with the matrix radical Cl2•− (with 405 nm laser) and C5•′, C3′•, and C1′• (with 640 nm laser). No sugar radicals are observed at pD ca. 9 with 640 nm laser but a small amount (ca. 20%) is observed with 405 nm for 30 min.