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. Author manuscript; available in PMC: 2013 Jul 21.
Published in final edited form as: Anal Chem. 2011 Jan 6;83(3):701–707. doi: 10.1021/ac100775s

Figure 1.

Figure 1

Amino acid labeling for various amino acid modifications. Light color bars represent the number of labeled amino acid residues; dark color bars represent the total number of residues available for labeling.