loop_ _pdbx_nmr_exptl_sample_conditions.conditions_id _pdbx_nmr_exptl_sample_conditions.temperature _pdbx_nmr_exptl_sample_conditions.pressure _pdbx_nmr_exptl_sample_conditions.pH _pdbx_nmr_exptl_sample_conditions.ionic_strength 1 298 ambient 7 '25mM NaCl' 2 298 ambient 3 '25mM NaCl'