read coor pdb DRR147D_R3_em_bcr3.pdb all rmsd coor heavy 4A-23A,65A-70A,73A-78A,90A-97A,102A-109A,116A-124A,135A-146A ave resOrd_rmsd_heavy rmsd coor backbone 4A-23A,65A-70A,73A-78A,90A-97A,102A-109A,116A-124A,135A-146A ave resOrd_rmsd_bb write best.pdb coor all all pdb quit