3.6.1.17 - 209893, 209903, 209904, 209905, 209906, 209907, 209908, 209909, 209911, 209912 3.6.1.17 by affinity chromatography by means of nickel-nitrilotriacetic acid agarose 695301 3.6.1.17 HisTrap FF column chromatography and Superdex 75 gel filtration 719339 3.6.1.17 partial 209894, 209895, 209897, 209900, 209913 3.6.1.17 recombinant His-tagged Apf from Spodoptera frugiperda Sf21 cells by nickel affinity chromatography with removal of the His-tag 687119 3.6.1.17 symmetrical Ap4A hydrolase is partially purified from Escherichia coli 697896 3.6.1.17 Toyopearl SuperQ-650M column chromatography, Resource Q column chromatography, Bio-Scale CHT2-I column chromatography, and Superdex 75 gel filtration 710715