6.2.1.20 27000 - x * 27000, SDS-PAGE 685 6.2.1.20 35000 - SDS-PAGE and native PAGE 654491 6.2.1.20 60400 - SDS-PAGE, hexahistidine-tagged 672044 6.2.1.20 62000 - x * 62000, SDS-PAGE 689 6.2.1.20 80000 - gel filtration under reducing conditions 689 6.2.1.20 80600 - - 657235