loop_ _pdbx_refine_ls_restr_ncs.dom_id _pdbx_refine_ls_restr_ncs.type _pdbx_refine_ls_restr_ncs.number _pdbx_refine_ls_restr_ncs.rms_dev _pdbx_refine_ls_restr_ncs.weight 'd1' 'tight positional' 402 0.683 0.050 'd1' 'medium positional' 184 0.422 0.050 'd1' 'loose positional' 305 1.092 5.000