read coor pdb MRR110B_R3Cons_em_bcr3.pdb all rmsd coor heavy 2A-35A,37A-78A,83A-94A ave resOrd_rmsd_heavy rmsd coor backbone 2A-35A,37A-78A,83A-94A ave resOrd_rmsd_bb write best.pdb coor all all pdb quit