3.1.3.15 - 170816, 170817, 170822, 5531, 5535, 5537, 678231 3.1.3.15 immobilized metal ion affinity chromatography (Ni2+), gel filtration 701522 3.1.3.15 Ni-NTA affinity chromatography 729227 3.1.3.15 Ni-NTA column chromatography 679393 3.1.3.15 nickel-nitrilotriacetic acid column chromatography 680722 3.1.3.15 recombinant His-tagged wild-type and mutant enzymes from Escherichia coli by nickel affinity chromatography and gel filtration 751106 3.1.3.15 recombinant protein 750206 3.1.3.15 TALON metal affinity column chromatography and Superdex 200 10/300 gel filtration 680523 3.1.3.15 the recombinant enzyme 649241