2.8.1.8 - 661138, 661718 2.8.1.8 C-terminally His-tagged protein 663290 2.8.1.8 Ni-NTA column chromatography and Sephacryl S-200 gel filtration 739557 2.8.1.8 Ni-NTA resin chromatography and Sephacryl 200 gel filtration 737720 2.8.1.8 recombinant 660704 2.8.1.8 wild-type and hexahistidine-tagged LipA 661057