1.3.1.31	-	390673, 390675, 390684, 762858, 762904, 763423	
1.3.1.31	Ni-NTA column chromatography	740318	
1.3.1.31	Ni2+-NTA bead chromatography	684248	
1.3.1.31	recombinant enzyme	390686	
1.3.1.31	using affinity chromatography	724100	
1.3.1.31	using ammonium sulfate precipitation and treatment in an acidic buffer	724878