1.1.1.118 ? x * 30000, SDS-PAGE -, 739713 1.1.1.118 homodimer 2 * 60200, gel filtration, in the presence of 6 M guanidinium chloride -, 639110 1.1.1.118 homotetramer 4 * 30100, gel filtration, in the presence of 5% (w/v) SDS -, 639110