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. Author manuscript; available in PMC: 2010 Jul 1.
Published in final edited form as: Adv Exp Med Biol. 2010;660:61–71. doi: 10.1007/978-1-60761-350-3_7

Fig. 1.

Fig. 1

Modified porcine carboxylesterase (PCE) peptides. Aged peptides identified with a mass shift of 170 Da on serine are indicated by S*. Ser222 is the catalytic serine, with Ser368, Ser384, and Ser473 located nearby. (Adapted with permission from Fig. 2 in Furlong et al. 2005)