| In this example the crystal structure does not fit to the SAXS profile well (χ = 15.2, green profile). Several conformations are needed in order to explain the data. In solution the protein exists as a population of closed and open states. The fit to data improves as more open states are added (bar plot and fit plot) and for 4 states the χ value is 1.2. In the fit plot, the experimental data is shown as black dotes, the best scoring single structure fit is green, the 2-state fit is red, the 3-state fit is blue, and the 4-state fit is cyan. Click on show/hide buttons to display/hide the corresponding profiles. The best scoring 2-, 3-, and 4-state models are shown below in the corresponding colors.