Table 1. XIP binding on ComR WT and ComR mutant proteins as measured by ITC.

ComR	stoichiometry	KD (μM)
WT	0.8	0.010 ± 0.001
K100A	0.8	1.175 ± 0.245
T90A	0.7	0.244 ± 0.108
Y91A	0.9	0.141 ± 0.033
R92A	1.2	0.277 ± 0.023
F171A/Y174A	1.1	0.087 ± 0.009
K87A/K246A	0.8	0.009 ± 0.003