By using the similar separation and purification methods , a nifh and a nife mofe protein were obtained from azotobacter vinelandii mutants dj54 and dj35 . the results of the complement activity experiments showed that a nifh mofe could be activated by femoco 從棕色固氮菌突變種dj _ ( 54 )中得到了nifhmofe蛋白;并參與了棕色固氮菌突變種dj _ ( 35 )的nifemofe蛋白的分離純化,所用方法與nifb ~ - mofe蛋白的分離純化相似。