2.7.8.29 ? x * 50000, about, recombinant FLAG-tagged PSS2, SDS-PAGE 722906 2.7.8.29 ? x * 50000, calculated from amino acid sequence 722906 2.7.8.29 ? x * 50000, SDS-PAGE of epitope-tagged recombinant protein 717210 2.7.8.29 ? x * 55000, SDS-PAGE 717768