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. Author manuscript; available in PMC: 2011 Dec 17.
Published in final edited form as: ACS Chem Biol. 2010 Oct 4;5(12):1157–1168. doi: 10.1021/cb100138m

Figure 5.

Figure 5

EPR spectra of tyrosyl radicals in beta hairpin peptides at pH 5.0 (red) and 11.0 (black). The radicals were generated by UV photolysis at 108 K. The panels show spectra acquired from (A) tyrosine, (B) peptide A, (C) peptide C (H14Cha), (D) peptide D (H14Val; R12A), (E) peptide E (R16I), and (F) peptide F (R12I). To compare spectral linewidth, the spectra were normalized for any amplitude differences. See Materials and Methods for spectral conditions.