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. 2021 Nov 6;297(6):101385. doi: 10.1016/j.jbc.2021.101385

Table 3.

Binding affinity of I-Tyr and Tyr as a function of side chain substitution (25 °C)a

TnIYD Kd (μM)
I-Tyr Tyr
wt 0.05 ± 0.02 0.45 ± 0.07
Y112A 0.03 ± 0.02 0.9 ± 0.1
M41A 0.25 ± 0.06 1.6 ± 0.2
M41A/Y112A 0.024 ± 0.002 0.95 ± 0.09
M41K 1.1 ± 0.1 7.4 ± 0.2
M41F 0.5 ± 0.1 0.09 ± 0.06
Y112A/W82A/F88A 0.9 ± 0.1 1200 ± 20
a

All data and error were obtained by fitting of two independent measurements.