loop_ _pdbx_reflns_twin.diffrn_id _pdbx_reflns_twin.crystal_id _pdbx_reflns_twin.type _pdbx_reflns_twin.operator _pdbx_reflns_twin.fraction _pdbx_reflns_twin.mean_I2_over_mean_I_square _pdbx_reflns_twin.mean_F_square_over_mean_F2 1 1 merohedral 'h,-h-k,-l' .43 1.3 .84