1.1.1.3	Cs+	activation of threonine sensitive enzyme	246388	
1.1.1.3	K+	activation of threonine sensitive isozyme	246388	
1.1.1.3	Li+	activation of threonine sensitive isozyme	246388	
1.1.1.3	Na+	activation of threonine sensitive form	246388	
1.1.1.3	NH4+	activation of threonine sensitive isozyme	246388	
1.1.1.3	K+	required	246392	
1.1.1.3	Li+	can partially replace K+	246392	
1.1.1.3	Na+	can partially replace K+	246392	
1.1.1.3	NH4+	can partially replace K+	246392	
1.1.1.3	Rb+	can partially replace K+	246392