1.4.1.13 ? x * 142000 + x * 55000, SDS-PAGE 391454 1.4.1.13 ? x * 152000 + x * 53000, SDS-PAGE 391462 1.4.1.13 ? x * 175000 + x * 51500, SDS-PAGE 391460 1.4.1.13 ? x * 46000, deduced from gene sequence -, 654888 1.4.1.13 ? x * 51900, calculated from sequence 745714 1.4.1.13 ? x * 51900, pGLTY2, SDS-PAGE, x * 52000, pGLTY1, SDS-PAGE 725886 1.4.1.13 ? x * 52400, calculated from sequence -, 745714 1.4.1.13 ? x * 52400, SDS-PAGE 725886 1.4.1.13 ? x * 72000 + x * 94000 391455 1.4.1.13 ? x * alpha subunit, 162000, + x * beta subunit, 52300, SDS-PAGE 654382 1.4.1.13 dimer 1 * 145000 + 1 * 55000, SDS-PAGE 391440 1.4.1.13 dimer 1 * 158000 + 1 * 54000, SDS-PAGE 391449 1.4.1.13 dimer 1 * 160000 + 1 * 56000 391459 1.4.1.13 heterodimer - 676331 1.4.1.13 homodimer 2 * 200000, cryoelectron microscopy and small angle X-ray scattering 687801 1.4.1.13 homohexamer 6 * 200000, cryoelectron microscopy and small angle X-ray scattering, the hexamer exhibits a concentration-dependent equilibrium with monomers and dimers, in solution the hexamer is destabilized by high ionic strength and to a lower extent by the reaction product NADP+ 687801 1.4.1.13 additional information analysis by synchrotron radiation x-ray solution scattering, alpha subunit and alphabeta holoenzyme are tetrameric in solution, beta subunit is a mixture of monomers and dimers. The (alphabeta)4 holoenzyme is similar to the tetrameric alpha4 complex with the beta subunits occupying the periphery, thus allowing independent catalytic activities of the alphabeta protomers 656149 1.4.1.13 additional information modelling of unliganded alpha subunit as well as in complex with L-glutamine and 2-oxoglutarate, subunit exists in a catalytically inactive conformation unable to bind glutamine, and in a catalytically competent conformation, which is stabilized by the glutamine substrate. Binding of L-methionine sulfone causes a coordinated rigid-body motion that results in the inactive conformation 657306 1.4.1.13 octamer 4 * 135000 + 4 * 50000, SDS-PAGE 391446 1.4.1.13 octamer 4 * 53000 + 4 * 135000, SDS-PAGE, urea polyacrylamide gel electrophoresis 391438 1.4.1.13 tetramer 4 * 53000, SDS-PAGE 391464 1.4.1.13 tetramer gel filtration, aggregation state of NADPH-GltS alphabeta holoenzyme 676332