5.3.1.15 ? x * 19500, estimated from SDS-PAGE 713845 5.3.1.15 ? x * 21000, SDS-PAGE 747682 5.3.1.15 dimer 2 * 22000, SDS-PAGE -, 749201 5.3.1.15 dimer 2 x 21000 SDS-PAGE -, 674319 5.3.1.15 dimer x-ray crystallography -, 716872 5.3.1.15 homodimer 2 * 22000, SDS-PAGE -, 715675, 727225 5.3.1.15 homodimer 2 * 22160, calculated from amino acid sequence -, 715675 5.3.1.15 homodimer 2 * 26756, calculated from amino acid sequence -, 716074 5.3.1.15 homodimer 2 * 27000, SDS-PAGE -, 716074