read coor pdb SGR209C_NMR_em_bcr3.pdb all rmsd coor heavy 14A-18A,20A-38A,48A-78A,83A-99A,102A-143A ave resSel_rmsd_heavy rmsd coor backbone 14A-18A,20A-38A,48A-78A,83A-99A,102A-143A ave resSel_rmsd_bb write selSi.pdb coor all all pdb quit