read coor pdb LKR112_NMR_em_bcr3.pdb all rmsd coor heavy 7A-36A,41A-48A,51A-91A ave resOrd_rmsd_heavy rmsd coor backbone 7A-36A,41A-48A,51A-91A ave resOrd_rmsd_bb write best.pdb coor all all pdb quit