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Peptide sequencing via tandem mass spectrometry (MS/MS) is one of the most powerful tools in proteomics for identifying proteins. Because complete genome sequences are accumulating rapidly, the recent trend in interpretation of MS/MS spectra has been database search. However, de novo MS/MS spectral interpretation remains an open problem typically involving(More)
BACKGROUND Reactive oxygen species, ionizing radiation, and other free radical generators initiate the conversion of guanine (G) residues in DNA to 8-oxoguanine (OG), which is highly mutagenic as it preferentially mispairs with adenine (A) during replication. Bacteria counter this threat with a multicomponent system that excises the lesion, corrects OG:A(More)
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