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. 2021 Sep 15;11:736955. doi: 10.3389/fonc.2021.736955

Table 1.

Binding affinity of GLS-010 to hPD-1 protein by SPR.

Analyte Ligand ka (1/Ms) kd (1/s) KD (M) Rmax (RU) Chi2 (RU)
Human PD-1.ECD.His GLS-010 1.12E+06 1.96E-04 1.75E-10 54.14 2.58
Nivolumab 7.76E+05 8.97E-04 1.16E-09 68.9 2.2

SPR, surface plasmon resonance; ka, association rate constant; kd, dissociation rate constant; KD, affinity constant; Rmax, maximum observed response; Chi2, goodness of fit indicator.