In the version of this article initially published online, in Figure 3c, the label “unidentified b-type ions” should have been deleted, and in Figure 4, the symbols over the peptide sequences were misplaced. The errors have been corrected for the print, PDF and HTML versions of this article.
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The online version of the original article can be found at 10.1038/nbt.3267
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Chick, J., Kolippakkam, D., Nusinow, D. et al. Erratum: A mass-tolerant database search identifies a large proportion of unassigned spectra in shotgun proteomics as modified peptides. Nat Biotechnol 33, 882 (2015). https://doi.org/10.1038/nbt0815-882d
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DOI: https://doi.org/10.1038/nbt0815-882d
