Nitrogenase CrFe protein and MnFe protein were purified from a mutant strain UW3 of Azotobacter vinelandii Lipmann grown on a medium containing Cr and Mn, respectively. In order to meet the requirement for crystal gro...
Six hundred and 28 mg of NifB(-) Av1 was obtained by a chromatography twice on DE 52 columns and Sephacryl S-300 column from the crude extract (37 677 mg) of a nifB mutated strain UW45 of Azotobacter vinelandii Lipman...