2.3.1.75	ammonium sulfate	45 mM, 10% increase in activtiy	
2.3.1.75	bovine serum albumin	defatted, 2fold activation in crude enzyme extract at concentration below 5 mg/ml, inhibition above	
2.3.1.75	bovine serum albumin	highest activity in the presence of 0.6 mg bovine serum albumin	
2.3.1.75	GTP	activation	
2.3.1.75	NaCl	isoform WSD5 shows maximum enzyme activity at NaCl concentration of 800 mM	
2.3.1.75	NaCl	isoform WSD4 shows maximum enzyme activity at NaCl concentration of 400 mM