5.4.99.B22	EDTA	the complex Pus1/tRNAVal is sensitive to the presence of EDTA	21	
5.4.99.B22	KCl	the complex of Pus1 with tRNA is sensitive to high ionic strength. The optimal concentration of KCl for Pus1 binding is 100 mM. Above 400 mM KCl, no complex is detected	79