3.1.3.21 ? x * 29000, SDS-PAGE 687860 3.1.3.21 ? x * 37904, ESI mass spectrometry 729248 3.1.3.21 homodimer 2 * 58600, calculated from amino acid sequence -, 730083 3.1.3.21 monomer gel filtration and non-denaturating gradient gel electrophoresis 81025