1.7.1.1 - 1.7.1.1 ammonium sulfate precipitation and Ble Sepharose chromatography 1.7.1.1 by affinity chromatography using 5'AMP Sepharose and monoclonal antibodies 1.7.1.1 extracting strength of different detergents on membrane-bound isozyme 1.7.1.1 flavin domain 1.7.1.1 HiTrap Q column anion-exchange chromatography 1.7.1.1 immunoaffinity chromatography using a monoclonal antibody 1.7.1.1 mutant enzymes K741R, K741H, K714A, K741E, K741M, K741Q, K741P 1.7.1.1 NADH:Fe(III)-citrate reductase activity copurifies and has identical electrophoretic mobility 1.7.1.1 partial 1.7.1.1 recombinant enzyme expressed in Pichia pastoris 1.7.1.1 removal of nicked subunits by affinity chromatography 1.7.1.1 Sephadex G-25 gel filtration 1.7.1.1 SourceQ15 column chromatography and Ni-NTA column chromatography 1.7.1.1 the C-terminal 268 residues corresponding to the flavin-containing domain, amplified and expressed in Escherichia coli 1.7.1.1 wild-type and nr1-mutant