read coor pdb OR8C_R3Cons_em_bcr3.pdb all rmsd coor heavy 4A-80A,86A-119A,129A-132A ave resSel_rmsd_heavy rmsd coor backbone 4A-80A,86A-119A,129A-132A ave resSel_rmsd_bb write selSi.pdb coor all all pdb quit