Fig. 8

The volume comparison of the isosurface of PDB point cloud model, our multiple-ball model and single-ball model. The point cloud isodurface could be regarded as the true volume of a macromolecule. The calculation method is illustrated in supplementary Document section S3. This result shows that our multiple-ball model has a rather small volume the single-ball model. For 75% macromolecules, our model can save space for 11%-72% comparing with the single-ball model, especially 1BXR, 1GYT and 1QO1