1.20.1.1 ? x * 38500, SDS-PAGE, His-tag fusion protein 657956 1.20.1.1 ? x * 38500, SDS-PAGE, His-tag fusion protein, x * 36400, SDS-PAGE, native protein -, 658120 1.20.1.1 dimer 2 * 35000, SDS-PAGE -, 726694 1.20.1.1 homodimer gel filtration 287853