2.6.1.85 - 702371 2.6.1.85 chromatography on Poros HQ50, HS20 cation exchange chromatography and chromatography on hydroxyapatite 644249 2.6.1.85 immobilized metal ion affinity chromatography (Co2+), fusion tag removed 724331 2.6.1.85 immobilized metal ion affinity chromatography (Ni2+), gel filtration 724111 2.6.1.85 protamine sulfate precipitation, ammonium sulfate fractionation, chromatography on Sephacryl S-200, chromatography on DEAE-Sephacel and chromatography on dye-agarose 644227 2.6.1.85 streptomycin sulfate precipitation, ammonium sulfate fractionation, chromatography on DEAE-cellulose 644230