Table 2.

Purification of ferric iron reductase fromM. magnetotacticum

FractionProtein (mg)Total activity (nmol/min)Sp act (nmol/min/mg)Purification (fold)Recovery (%)
Soluble extract1,10011,42910.41.00100
(NH4)2SO4fractionation38510,00026.02.5087
Butyl-Toyopearl62.76,60510510.158
Sepharose CL-6B9.73,14232431.228
Sephacryl S-2000.278403,1112997.3