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LC-ESI-MS/MS sequence analysis of full-length extension reactions for N2-dG-15-mer peptide cross-link by hpol η in the presence of dNTPs.A, Extracted ion chromatogram and B, CID spectrum of m/z 939.36 (−3, tR 3.69 min) for N2-dG-15-mer peptide DNA cross-link. See Table S7 for fragment assignments.
