Hi Mohamed, Normally you would have 2 sets of entries in your Table 1, one for each dataset. If the second is not isomorphous, yes you can do MR with the MR-SAD model and refine at higher resolution. All the best, Tom T ________________________________ From: [email protected] [[email protected]] on behalf of mohamed noor [[email protected]] Sent: Sunday, August 16, 2015 3:19 PM To: PHENIX user mailing list Subject: [phenixbb] "Table 1" wavelength Dear all A trivial question but just to be sure: For a structure phased and built using MR-SAD with a dataset collected at one wavelength and refined with a higher-resolution dataset at a different wavelength, how should the wavelength be reported in "Table 1"? And what if the higher-resolution dataset is not isomorphous to the anomalous dataset? Is it sensible to do MR-SAD first, redo MR with the better dataset against the MR-SAD model and then refine at the higher resolution (about 0.8 A better)? Thanks.