TABLE 2.

Effects of different cations on ionic interactions^a

	KClb	KCl (+pre-tRNA)c	C domaind	MgCl2e	Co(NH4)6Cl3f
n3	3.1 ± 0.4	3.2 ± 0.9	2.8 ± 0.2	3.2 ± 0.5	3.4 ± 0.2
n3logK3	6.3 ± 0.1	7.3 ± 0.3	6.66 ± 0.05	6.2 ± 0.1	5.8 ± 0.2

^aThe apparent intraholoenzyme K_Ds were measured at varying ionic conditions as described in the legend of Figure 6 ▶.

^bVarying the concentration of KCl.

^cVarying the concentration of KCl in the presence of 0.1 nM pre-tRNA^Asp.

^dVarying the concentration of KCl using C domain in lieu of PRNA.

^eVarying the concentration of MgCl₂.

^fVarying the concentration of Co(NH₄)₆Cl₃.