2.7.1.151	ammonium sulfate, Con A-Sepharose, DEAE-Toyopearl, 5'AMP-Sepharose	
2.7.1.151	ammonuium sulfate, DEAE-cellulose	
2.7.1.151	native enzyme partially by nuclear fraction preparation	
2.7.1.151	recombinant enzyme	
2.7.1.151	recombinant enzyme from Escherichia coli strain BL21(DE3) to near homogeneity by ion exchange and phosphocellulose resin chromatography	
2.7.1.151	recombinant enzyme from strain expression in strain 12S16cpep4D by nickel affinity chromatography	
2.7.1.151	recombinant GST-fusion isozymes from Escherichia coli by glutathione affinity chromatography	
2.7.1.151	recombinant His-tagged wild-type and mutant enzymes from Escherichia coli by nickel affinity and heparin affinity chromatography, followed by tag cleavage through TEV protease, another step of heparin affinity chromatography, and gel filtration	
2.7.1.151	recombinant N-terminally His-tagged enzyme from Escherichia coli strain BL21(DE3) by cobalt affinity chromatography	
2.7.1.151	recombinant wild-type enzyme and deletion mutant from Escherichia coli by ion exchange and phosphocellulose resin chromatography