2.7.1.82 - 642039, 642040 2.7.1.82 copurification of choline kinase and ethanolamine kinase 641345 2.7.1.82 ethanolamine kinase I and II 641348 2.7.1.82 partial 642041 2.7.1.82 recombinant protein 685011 2.7.1.82 using a HisTrap chelating and a gel filtration column 702145