4.1.2.20	-	
4.1.2.20	ammonium sulfate precipitation, phenyl-Sepharose column chromatography, UnoQ5 column chromatography, and Superdex 200 gel filtration	
4.1.2.20	DEAE-Sepharose column chromatography and Superdex 75 gel filtration	
4.1.2.20	homogeneity	
4.1.2.20	using metal affinity and size exclusion chromatography