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. Author manuscript; available in PMC: 2018 Dec 1.
Published in final edited form as: Mol Immunol. 2017 Oct 12;92:28–37. doi: 10.1016/j.molimm.2017.10.001

Table 3.

Kinetic parameters obtained for binding of FcγRIIIA with the IgG3 Fc glycovariants

IgG3 Fc
glycoform
Average kon*105
(1/M.sec)
Average koff*10−3
(1/sec)
Average KD
(nM)
Man8-Man12 1.6 ± 0.1 6.5 ± 0.2 41.4 ± 2.7
Man5 1.5 ± 0.1 6.8 ± 0.2 46.5 ± 2.4
Fc-GlcNAc 1.7 ± 0.4 85.8 ± 7.7 506 ± 113
D297 nd* nd* nd*
*

not detected at highest receptor concentration of 15 μ