1.1.1.203 30000 - x * 30000, SDS-PAGE 698607 1.1.1.203 30500 - 2 * 30500, SDS-PAGE, subunits alone inactive 286231 1.1.1.203 32000 - x * 32000, SDS-PAGE 698607 1.1.1.203 59000 - gel filtration, ultracentrifugation 286231