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. Author manuscript; available in PMC: 2021 Jun 26.
Published in final edited form as: J Mol Biol. 2020 May 21;432(14):4108–4126. doi: 10.1016/j.jmb.2020.05.013

Table 1.

Parameters of alarmone interaction with XPRT

Kd (μM) nH IC50 (μM) napp
pppGpp 9.6 ± 2.2 1.3 ± 0.2 56.4 ± 1.8 1.5 ± 0.1
ppGpp 0.95 ± 0.03 2.1 ± 0.1 3.3 ± 0.1 1.7 ± 0.1
pGpp 0.76 ± 0.04 2.3 ± 0.2 0.96 ± 0.04 1.6 ± 0.1

IC50 = half maximal inhibitory concentration

nH = Hill coefficient from binding curve

napp = apparent Hill coefficient from inhibition curve

± standard error