2.6.1.5 50000 - SDS-PAGE 671159 2.6.1.5 42000 - x * 42000, SDS-PAGE 686608 2.6.1.5 49600 - calculated from amino acid sequence 705599 2.6.1.5 46420 - calculated from cDNA 721359 2.6.1.5 46000 - - 723465 2.6.1.5 98600 - gel filtration 759200