2.1.1.182	KCl	slightly stimulated up to 0.2 M	
2.1.1.182	Mg2+	required	
2.1.1.182	Mg2+	2-3 mM, required	
2.1.1.182	Mg2+	methylation of 30S ribosomal subunits by Thermus thermophilus KsgA is more efficient at low concentrations of magnesium ions suggesting that partially unfolded RNA is the preferred substrate	
2.1.1.182	additional information	K+ and NH4+ in the range of 10 to 150 mM have little effect on methylation	
2.1.1.182	NaCl	slightly stimulated up to 0.2 M