read coor pdb GMR137_R3Cons_em_bcr3.pdb all rmsd coor heavy 1A-13A,18A-29A,32A-63A ave resSel_rmsd_heavy rmsd coor backbone 1A-13A,18A-29A,32A-63A ave resSel_rmsd_bb write selSi.pdb coor all all pdb quit