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. 2021 May 19;27(15):4435–4448. doi: 10.1158/1078-0432.CCR-20-0482

Table 1.

The apparent binding affinity between sPD-1 wild-type Fc, sPD-1V1 Fc, and sPD-1V2 Fc in co-complex with human PD-L1 and PD-L2.

Analyte Ligand ka (1/ms) kd (1/second) Kd (mol/L)
Human PD-L1 sPD-1 WT N/A N/A 2.743E-6
sPD-1V1 2.038E+6 6.941E-4 3.406E-10
sPD-1V2 2.139E+6 7.500E-4 3.420E-10
Human PD-L2 sPD-1 WT 1.811E+5 0.1029 5.471E-7
sPD-1V1 4.366E+6 0.01288 2.949E-9
sPD-1V2 4.479E+6 0.01524 3.402E-9