1.3.3.11 - 1.3.3.11 partial purification of recombinant protein 1.3.3.11 Q-Sepharose column chromatography and Ultrogel AcA54 gel filtration 1.3.3.11 recombinant His-tagged wild-type and mutant enzyme from Escherichia coli strain BL21(DE3) by nickel affinity chromatography and gel filtration 1.3.3.11 Superdex S-200 gel filtration