dihydrofolate synthetase [ ec 6.3.2.12 ] was extracted from the cell particles ( mitochondrial fraction ) of pea seedlings and purified about 2,000-fold by ammonium sulfate fraction , deae-cellulose column chromatography , sephades g-200 gel filtration , and hydroxylapatite column chromatography .
C0007634
cell
C0026237
mitochondrial