I don’t think that backrub requires a movemap – perhaps it’s only necessary to backrub only part of the structure?
I’ve never used a movemap file before but it seems to be simple. The code is in src/core/kinematic/MoveMap.cc line 252 (init_from_file). It looks like the format is simple, just a sequence number and then a token for which degree of freedom is moveable (your choices are BB and CHI). Note that this sequence numbering is relative to 1 – it has nothing to do with the PDB numbering.
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