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. Author manuscript; available in PMC: 2017 Feb 1.
Published in final edited form as: J Pharm Sci. 2016 Jan 9;105(2):559–574. doi: 10.1016/j.xphs.2015.11.003

Figure 5.

Figure 5

Representative charge heterogeneity profiles of IgG1 Fc glycoforms as measured by capillary isoelectric focusing (cIEF). The isoelectric point (pI) of the main peak (n=3; SD ~0.1 pI units): pI of 7.0 for HM-Fc, pI of 6.9 for Man5-IgG1Fc,, pI of 7.1 for GlcNAc-Fc, and pI of 7.4 for N297Q-Fc.