read coor pdb DHR8C_R3_em_bcr3.pdb all rmsd coor heavy 5M-27M,30M-40M,50M-62M,86M-108M,111M-121M,131M-143M ave resOrd_rmsd_heavy rmsd coor backbone 5M-27M,30M-40M,50M-62M,86M-108M,111M-121M,131M-143M ave resOrd_rmsd_bb write best.pdb coor all all pdb quit