read coor pdb SR478_NMR_em_bcr3.pdb all rmsd coor heavy 7M-20M,24M-42M,47M-69M,97M-109M,112M-132M,137M-158M ave resOrd_rmsd_heavy rmsd coor backbone 7M-20M,24M-42M,47M-69M,97M-109M,112M-132M,137M-158M ave resOrd_rmsd_bb write best.pdb coor all all pdb quit