3.2.2.28	-	691667, 692966, 694210	
3.2.2.28	HiTrap chelating column chromatography	732137	
3.2.2.28	native and recombinant protein	690873	
3.2.2.28	recombinant His6-tagged wild-type and mutant enzymes from Escherichia coli strains by nickel affinity chromatography	679463