read coor pdb STR65_NMR_em_bcr3.pdb all rmsd coor heavy 11A-19A,31A-63A,67A-83A,95A-108A ave resSel_rmsd_heavy rmsd coor backbone 11A-19A,31A-63A,67A-83A,95A-108A ave resSel_rmsd_bb write selSi.pdb coor all all pdb quit