The apparent molecular weight of g6pd , determined by gel filtration , was 220kd ; the subunit molecular weight was 50 . 5kd as determined by sds - page , suggesting that the native enzyme was a tetramer consisting of four identical subunits 凝胶过滤法测定该酶表观分子量约为220kd ， sds - page测定亚基分子量约为50 . 5kd ，可见该酶是由四个相同亚基构成的四聚体。
