4.2.3.114 ? x * 68490, calculated 4.2.3.114 ? x * 66268, calculated 4.2.3.114 ? x * 67700, about, sequence calculation 4.2.3.114 dimer 2 * 55000, SDS-PAGE 4.2.3.114 dimer overall structure of each TvTPS1 monomer comprises two alpha-helical domains: an N-terminal domain comprising an alpha/alpha barrel and a C-terminal orthogonal bundle domain, crystal structure analysis