Hi, 

If two atomic models do not have the exact same atoms, rmsd command does not run. One workaround would be to use matchmaker beforehand, and there is indeed a reported RMSD between "pruned atom pairs." However, this applies the matching before the calculation. In addition, from the attached screenshot (matching https://alphafold.ebi.ac.uk/files/AF-P32565-F1-model_v4.cif to 5wvi chain N), I expect most of the atoms should not be pruned, which is not the case. 

I wonder if there is a command or tool to calculate the RMSD between the not-moved nonidentical atomic models. 

Thanks,
Roden




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