
Fig.3. Model of the subunit arrangement in the V1-ATPase from M. sexta and its nucleotide-dependent rearrangement, based on the combination of the solution-scattering X-ray data, the three-dimensional reconstruction (dark grey) and biochemical studies (Grüber et al., 2000a). Subunits CH are placed within the envelope of the stalk of V1 from M. sexta as determined by SAXS data (Svergun et al., 1998b).