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. 2009 Apr 10;284(15):10268–10275. doi: 10.1074/jbc.M900154200

TABLE 3.

Summary of kinetic parameters for OASS-SAT interaction determined by SPR

SPR experiments were performed as described under “Experimental Procedures.” Raw SPR data was fit to either a one-(0.018 and 0.036 μm OASS)-, two (0.18 and 0.36 μm OASS)-, or three (0.72 and 1.2 μm OASS)-site binding model to obtain values for each association and dissociation event.

[OASS] Kd,1 Kd,2 Kd,3 ka,1 ka,2 ka,3
μm ×10−3 s−1 ×10−4 s−1 ×10−5 s−1 ×105m−1 s−1 ×104m−1 s−1 ×103m−1 s−1
0.018 2.2 ± 0.02 2.5 ± 0.01
0.036 1.9 ± 0.02 1.4 ± 0.01
0.180 6.0 ± 0.03 2.0 ± 0.02 2.0 ± 0.01 6.2 ± 0.01
0.36 2.1 ± 0.01 1.9 ± 0.01 2.5 ± 0.01 4.1 ± 0.01
0.72 2.3 ± 0.01 2.1 ± 0.02 4.3 ± 0.06 2.5 ± 0.02 3.9 ± 0.01 6.3 ± 0.02
1.2 1.9 ± 0.01 2.4 ± 0.03 4.4 ± 0.04 2.5 ± 0.01 2.0 ± 0.01 2.6 ± 0.02