data_bmse001012 ####################### # Entry information # ####################### save_entry_information _Entry.Sf_category entry_information _Entry.Sf_framecode entry_information _Entry.ID bmse001012 _Entry.Title D_fructose _Entry.Version_type update _Entry.Submission_date 2011-12-23 _Entry.Accession_date 2011-12-23 _Entry.Last_release_date 2013-03-06 _Entry.Original_release_date 2011-12-23 _Entry.Origination author _Entry.NMR_STAR_version 3.1.1.31 _Entry.Original_NMR_STAR_version 3.1 _Entry.Experimental_method NMR _Entry.Experimental_method_subtype solution _Entry.DOI 10.13018/BMSE001012 _Entry.BMRB_internal_directory_name D_fructose loop_ _Entry_author.Ordinal _Entry_author.Given_name _Entry_author.Family_name _Entry_author.First_initial _Entry_author.Entry_ID 1 Dan Bearden D. bmse001012 stop_ loop_ _Entry_src.ID _Entry_src.Organization_full_name _Entry_src.Organization_initials _Entry_src.Entry_ID 1 'National Institute of Standards and Technology, Hollings Marine Laboratory' NIST bmse001012 stop_ loop_ _Release.Release_number _Release.Format_type _Release.Format_version _Release.Date _Release.Submission_date _Release.Type _Release.Author _Release.Detail _Release.Entry_ID 1 . . 2012-12-21 2011-12-23 original BMRB 'Original spectra from Birmingham' bmse001012 2 . . 2013-03-06 2011-12-23 update BMRB 'Added PubChem SID 160963331 to database loop' bmse001012 3 . . 2017-10-12 2017-10-12 update BMRB 'Remediated Experiment_file loop if present and standardized mol and png file tags.' bmse001012 4 . . 2017-12-19 2017-10-12 update BMRB 'InChI numbering updated according to ALATIS' bmse001012 stop_ save_ ############### # Citations # ############### save_citation_1 _Citation.Sf_category citations _Citation.Sf_framecode citation_1 _Citation.Entry_ID bmse001012 _Citation.ID 1 _Citation.Class 'reference citation' _Citation.PubMed_ID 17170002 _Citation.Title 'Database resources of the National Center for Biotechnology Information.' _Citation.Status published _Citation.Type internet _Citation.WWW_URL http://pubchem.ncbi.nlm.nih.gov/ _Citation.Year 2006 loop_ _Citation_author.Ordinal _Citation_author.Given_name _Citation_author.Family_name _Citation_author.First_initial _Citation_author.Middle_initials _Citation_author.Entry_ID _Citation_author.Citation_ID 1 D. Wheeler D. L. bmse001012 1 2 T. Barrett T. ? bmse001012 1 3 D. Benson D. A. bmse001012 1 4 S. Bryant S. H. bmse001012 1 5 K. Canese K. ? bmse001012 1 6 V. Chetvenin V. ? bmse001012 1 7 D. Church D. M. bmse001012 1 8 M. DiCuccio M. ? bmse001012 1 9 R. Edgar R. ? bmse001012 1 10 S. Federhen S. ? bmse001012 1 11 L. Geer L. Y. bmse001012 1 12 W. Helmberg W. ? bmse001012 1 13 Y. Kapustin Y. ? bmse001012 1 14 D. Kenton D. L. bmse001012 1 15 O. Khovayko O. ? bmse001012 1 16 D. Lipman D. J. bmse001012 1 17 T. Madden T. L. bmse001012 1 18 D. Maglott D. R. bmse001012 1 19 J. Ostell J. ? bmse001012 1 20 K. Pruitt K. D. bmse001012 1 21 G. Schuler G. D. bmse001012 1 22 L. Schriml L. M. bmse001012 1 23 E. Sequeira E. ? bmse001012 1 24 S. Sherry S. T. bmse001012 1 25 K. Sirotkin K. ? bmse001012 1 26 A. Souvorov A. ? bmse001012 1 27 G. Starchenko G. ? bmse001012 1 28 T. Suzek T. O. bmse001012 1 29 R. Tatusov R. ? bmse001012 1 30 T. Tatusova T. A. bmse001012 1 31 L. Bagner L. ? bmse001012 1 32 E. Yaschenko E. ? bmse001012 1 stop_ save_ ############################################# # Molecular system (assembly) description # ############################################# save_assembly _Assembly.Sf_category assembly _Assembly.Sf_framecode assembly _Assembly.Entry_ID bmse001012 _Assembly.ID 1 _Assembly.Name D-(-)-Fructose _Assembly.Number_of_components 1 _Assembly.Organic_ligands 0 _Assembly.Non_standard_bonds no _Assembly.Paramagnetic no _Assembly.Thiol_state 'not reported' loop_ _Entity_assembly.ID _Entity_assembly.Entity_assembly_name _Entity_assembly.Entity_ID _Entity_assembly.Entity_label _Entity_assembly.Experimental_data_reported _Entity_assembly.Physical_state _Entity_assembly.Conformational_isomer _Entity_assembly.Chemical_exchange_state _Entity_assembly.Entry_ID _Entity_assembly.Assembly_ID 1 D_fructose 1 $D_fructose yes native no no bmse001012 1 stop_ save_ #################################### # Biological polymers and ligands # #################################### save_D_fructose _Entity.Sf_category entity _Entity.Sf_framecode D_fructose _Entity.Entry_ID bmse001012 _Entity.ID 1 _Entity.Name D-(-)-Fructose _Entity.Type non-polymer _Entity.Ambiguous_conformational_states no _Entity.Ambiguous_chem_comp_sites no _Entity.Nstd_monomer no _Entity.Nstd_chirality no _Entity.Nstd_linkage no _Entity.Paramagnetic no _Entity.Thiol_state 'not reported' loop_ _Entity_comp_index.ID _Entity_comp_index.Comp_ID _Entity_comp_index.Comp_label _Entity_comp_index.Entry_ID _Entity_comp_index.Entity_ID 1 1 $chem_comp_1 bmse001012 1 stop_ save_ #################### # Natural source # #################### save_natural_source _Entity_natural_src_list.Sf_category natural_source _Entity_natural_src_list.Sf_framecode natural_source _Entity_natural_src_list.Entry_ID bmse001012 _Entity_natural_src_list.ID 1 loop_ _Entity_natural_src.ID _Entity_natural_src.Entity_ID _Entity_natural_src.Entity_label _Entity_natural_src.NCBI_taxonomy_ID _Entity_natural_src.Type _Entity_natural_src.Common _Entity_natural_src.Organism_name_scientific _Entity_natural_src.Organism_name_common _Entity_natural_src.Superkingdom _Entity_natural_src.Kingdom _Entity_natural_src.Genus _Entity_natural_src.Species _Entity_natural_src.Entry_ID _Entity_natural_src.Entity_natural_src_list_ID 1 1 $D_fructose n/a 'multiple natural sources' yes 'not applicable' n/a n/a n/a n/a n/a bmse001012 1 stop_ save_ ######################### # Experimental source # ######################### save_experimental_source _Entity_experimental_src_list.Sf_category experimental_source _Entity_experimental_src_list.Sf_framecode experimental_source _Entity_experimental_src_list.Entry_ID bmse001012 _Entity_experimental_src_list.ID 1 loop_ _Entity_experimental_src.ID _Entity_experimental_src.Entity_ID _Entity_experimental_src.Entity_label _Entity_experimental_src.Production_method _Entity_experimental_src.Entry_ID _Entity_experimental_src.Entity_experimental_src_list_ID 1 1 $D_fructose 'chemical synthesis' bmse001012 1 stop_ save_ ################################# # Polymer residues and ligands # ################################# save_chem_comp_1 _Chem_comp.Sf_category chem_comp _Chem_comp.Sf_framecode chem_comp_1 _Chem_comp.Entry_ID bmse001012 _Chem_comp.ID 1 _Chem_comp.Provenance PubChem _Chem_comp.Name D-(-)-Fructose _Chem_comp.Type non-polymer _Chem_comp.InChI_code InChI=1S/C6H12O6/c7-1-3-4(9)5(10)6(11,2-8)12-3/h3-5,7-11H,1-2H2/t3-,4-,5+,6+/m1/s1 _Chem_comp.Paramagnetic no _Chem_comp.Aromatic no _Chem_comp.Formula 'C6 H12 O6' _Chem_comp.Formula_weight 180.1558800000 _Chem_comp.Formula_mono_iso_wt_nat 180.063388118 _Chem_comp.Formula_mono_iso_wt_13C 186.083517145 _Chem_comp.Formula_mono_iso_wt_15N 180.063388118 _Chem_comp.Formula_mono_iso_wt_13C_15N 186.083517145 _Chem_comp.Image_file_name bmse001012.png _Chem_comp.Image_file_format png _Chem_comp.Struct_file_name bmse001012.mol _Chem_comp.Struct_file_format mol loop_ _Chem_comp_common_name.Name _Chem_comp_common_name.Type _Chem_comp_common_name.Entry_ID _Chem_comp_common_name.Comp_ID beta-D-Fructose synonym bmse001012 1 D-arabino-Hexulose synonym bmse001012 1 D-Fructose synonym bmse001012 1 'Fruit sugar' synonym bmse001012 1 beta-Levulose synonym bmse001012 1 Levulose synonym bmse001012 1 stop_ loop_ _Chem_comp_descriptor.Descriptor _Chem_comp_descriptor.Type _Chem_comp_descriptor.Program _Chem_comp_descriptor.Program_version _Chem_comp_descriptor.Entry_ID _Chem_comp_descriptor.Comp_ID ; InChI=1S/C6H12O6/c7-1-3-4(9)5(10)6(11,2-8)12-3/h3-5,7-11H,1-2H2/t3-,4-,5+,6?/m1/s1 ; INCHI na na bmse001012 1 InChI=1S/C6H12O6/c7-1-3-4(9)5(10)6(11,2-8)12-3/h3-5,7-11H,1-2H2/t3-,4-,5+,6+/m1/s1 INCHI ALATIS 3.003 bmse001012 1 stop_ loop_ _Chem_comp_systematic_name.Name _Chem_comp_systematic_name.Naming_system _Chem_comp_systematic_name.Entry_ID _Chem_comp_systematic_name.Comp_ID (2R,3S,4R,5R)-2,5-bis(hydroxymethyl)oxolane-2,3,4-triol IUPAC bmse001012 1 (2R,3S,4R,5R)-2,5-dimethyloltetrahydrofuran-2,3,4-triol IUPAC_TRADITIONAL bmse001012 1 (2R,3S,4R,5R)-2,5-bis(hydroxymethyl)tetrahydrofuran-2,3,4-triol IUPAC_CAS bmse001012 1 (2R,3S,4R,5R)-2,5-bis(hydroxymethyl)tetrahydrofuran-2,3,4-triol IUPAC_OPENEYE bmse001012 1 (2R,3S,4R,5R)-2,5-bis(hydroxymethyl)oxolane-2,3,4-triol IUPAC_SYSTEMATIC bmse001012 1 stop_ loop_ _Chem_comp_SMILES.Type _Chem_comp_SMILES.String _Chem_comp_SMILES.Entry_ID _Chem_comp_SMILES.Comp_ID isomeric C([C@@H]1[C@H]([C@@H]([C@](O1)(CO)O)O)O)O bmse001012 1 canonical C(C1C(C(C(O1)(CO)O)O)O)O bmse001012 1 stop_ loop_ _Chem_comp_atom.Atom_ID _Chem_comp_atom.Type_symbol _Chem_comp_atom.Drawing_2D_coord_x _Chem_comp_atom.Drawing_2D_coord_y _Chem_comp_atom.PDBX_ordinal _Chem_comp_atom.Entry_ID _Chem_comp_atom.Comp_ID C6 C 4.2208 0.7694 1 bmse001012 1 C5 C 3.4118 0.1816 2 bmse001012 1 O12 O 5.0298 0.1816 3 bmse001012 1 C2 C 4.8086 1.5784 4 bmse001012 1 O11 O 3.6330 1.5784 5 bmse001012 1 C4 C 3.7208 -0.7694 6 bmse001012 1 O10 O 2.4607 0.4907 7 bmse001012 1 C3 C 4.7208 -0.7694 8 bmse001012 1 O8 O 5.8031 1.4739 9 bmse001012 1 O9 O 3.1330 -1.5784 10 bmse001012 1 C1 C 5.3086 -1.5784 11 bmse001012 1 O7 O 6.3031 -1.4739 12 bmse001012 1 H19 H 3.3148 0.7940 13 bmse001012 1 H15 H 4.9795 2.1744 14 bmse001012 1 H16 H 4.2514 1.8502 15 bmse001012 1 H24 H 3.8852 2.1448 16 bmse001012 1 H18 H 3.1085 -0.6724 17 bmse001012 1 H23 H 2.0000 0.0758 18 bmse001012 1 H17 H 5.3332 -0.6724 19 bmse001012 1 H21 H 6.1676 1.9755 20 bmse001012 1 H22 H 3.3852 -2.1448 21 bmse001012 1 H13 H 4.7514 -1.8502 22 bmse001012 1 H14 H 5.4795 -2.1744 23 bmse001012 1 H20 H 6.6676 -1.9755 24 bmse001012 1 stop_ loop_ _Atom_nomenclature.Atom_ID _Atom_nomenclature.Atom_name _Atom_nomenclature.Naming_system _Atom_nomenclature.Entry_ID _Atom_nomenclature.Comp_ID C6 C1 BMRB bmse001012 1 C5 C2 BMRB bmse001012 1 O12 O3 BMRB bmse001012 1 C2 C4 BMRB bmse001012 1 O11 O5 BMRB bmse001012 1 C4 C6 BMRB bmse001012 1 O10 O7 BMRB bmse001012 1 C3 C8 BMRB bmse001012 1 O8 O9 BMRB bmse001012 1 O9 O10 BMRB bmse001012 1 C1 C11 BMRB bmse001012 1 O7 O12 BMRB bmse001012 1 H19 H13 BMRB bmse001012 1 H15 H14 BMRB bmse001012 1 H16 H15 BMRB bmse001012 1 H24 H16 BMRB bmse001012 1 H18 H17 BMRB bmse001012 1 H23 H18 BMRB bmse001012 1 H17 H19 BMRB bmse001012 1 H21 H20 BMRB bmse001012 1 H22 H21 BMRB bmse001012 1 H13 H22 BMRB bmse001012 1 H14 H23 BMRB bmse001012 1 H20 H24 BMRB bmse001012 1 C6 C6 ALATIS bmse001012 1 C5 C5 ALATIS bmse001012 1 O12 O12 ALATIS bmse001012 1 C2 C2 ALATIS bmse001012 1 O11 O11 ALATIS bmse001012 1 C4 C4 ALATIS bmse001012 1 O10 O10 ALATIS bmse001012 1 C3 C3 ALATIS bmse001012 1 O8 O8 ALATIS bmse001012 1 O9 O9 ALATIS bmse001012 1 C1 C1 ALATIS bmse001012 1 O7 O7 ALATIS bmse001012 1 H19 H19 ALATIS bmse001012 1 H15 H15 ALATIS bmse001012 1 H16 H16 ALATIS bmse001012 1 H24 H24 ALATIS bmse001012 1 H18 H18 ALATIS bmse001012 1 H23 H23 ALATIS bmse001012 1 H17 H17 ALATIS bmse001012 1 H21 H21 ALATIS bmse001012 1 H22 H22 ALATIS bmse001012 1 H13 H13 ALATIS bmse001012 1 H14 H14 ALATIS bmse001012 1 H20 H20 ALATIS bmse001012 1 stop_ loop_ _Chem_comp_bond.ID _Chem_comp_bond.Type _Chem_comp_bond.Value_order _Chem_comp_bond.Atom_ID_1 _Chem_comp_bond.Atom_ID_2 _Chem_comp_bond.Entry_ID _Chem_comp_bond.Comp_ID 1 covalent SING C6 C5 bmse001012 1 2 covalent SING C6 O12 bmse001012 1 3 covalent SING C6 C2 bmse001012 1 4 covalent SING C6 O11 bmse001012 1 5 covalent SING C5 C4 bmse001012 1 6 covalent SING C5 O10 bmse001012 1 7 covalent SING C5 H19 bmse001012 1 8 covalent SING O12 C3 bmse001012 1 9 covalent SING C2 O8 bmse001012 1 10 covalent SING C2 H15 bmse001012 1 11 covalent SING C2 H16 bmse001012 1 12 covalent SING O11 H24 bmse001012 1 13 covalent SING C4 C3 bmse001012 1 14 covalent SING C4 O9 bmse001012 1 15 covalent SING C4 H18 bmse001012 1 16 covalent SING O10 H23 bmse001012 1 17 covalent SING C3 C1 bmse001012 1 18 covalent SING C3 H17 bmse001012 1 19 covalent SING O8 H21 bmse001012 1 20 covalent SING O9 H22 bmse001012 1 21 covalent SING C1 O7 bmse001012 1 22 covalent SING C1 H13 bmse001012 1 23 covalent SING C1 H14 bmse001012 1 24 covalent SING O7 H20 bmse001012 1 stop_ loop_ _Chem_comp_db_link.Author_supplied _Chem_comp_db_link.Database_code _Chem_comp_db_link.Accession_code _Chem_comp_db_link.Accession_code_type _Chem_comp_db_link.Entry_mol_name _Chem_comp_db_link.Entry_relation_type _Chem_comp_db_link.Entry_ID _Chem_comp_db_link.Comp_ID no PubChem 160963331 sid D-(-)-Fructose 'matching entry' bmse001012 1 no PubChem 85164863 sid D-(-)-Fructose 'matching entry' bmse001012 1 no PubChem 3848329 sid D-(-)-Fructose 'matching entry' bmse001012 1 no PubChem 439709 cid D-(-)-Fructose 'matching entry' bmse001012 1 no PubChem 3395 sid D-(-)-Fructose 'matching entry' bmse001012 1 no KEGG C00095 'compound ID' D-(-)-Fructose 'matching entry' bmse001012 1 no 'CAS Registry' 53188-23-1 'registry number' D-(-)-Fructose 'matching entry' bmse001012 1 no CHEBI 15824 ? D-(-)-Fructose 'matching entry' bmse001012 1 no PDB FRU 'Chemical Component' D-(-)-Fructose 'matching entry' bmse001012 1 stop_ loop_ _Chem_comp_citation.Citation_ID _Chem_comp_citation.Citation_label _Chem_comp_citation.Entry_ID _Chem_comp_citation.Comp_ID 1 $citation_1 bmse001012 1 stop_ save_ ##################################### # Sample contents and methodology # ##################################### ######################## # Sample description # ######################## save_sample_1 _Sample.Sf_category sample _Sample.Sf_framecode sample_1 _Sample.Entry_ID bmse001012 _Sample.ID 1 _Sample.Type solution loop_ _Sample_component.ID _Sample_component.Mol_common_name _Sample_component.Isotopic_labeling _Sample_component.Entity_ID _Sample_component.Entity_label _Sample_component.Type _Sample_component.Concentration_val _Sample_component.Concentration_val_units _Sample_component.Vendor _Sample_component.Vendor_product_name _Sample_component.Entry_ID _Sample_component.Sample_ID 1 D-fructose 'natural abundance' 1 $D_fructose Solute 20 mM sigma/aldrich D-fructose bmse001012 1 2 D2O ? ? ? Solvent 100 % ? ? bmse001012 1 3 'sodium phosphate' ? ? ? Buffer 200 mM ? ? bmse001012 1 4 'sodium azide' ? ? ? Cytocide 500 uM ? ? bmse001012 1 5 DSS ? ? ? Reference 500 uM ? ? bmse001012 1 stop_ save_ ####################### # Sample conditions # ####################### save_sample_conditions_1 _Sample_condition_list.Sf_category sample_conditions _Sample_condition_list.Sf_framecode sample_conditions_1 _Sample_condition_list.Entry_ID bmse001012 _Sample_condition_list.ID 1 loop_ _Sample_condition_variable.Type _Sample_condition_variable.Val _Sample_condition_variable.Val_units _Sample_condition_variable.Entry_ID _Sample_condition_variable.Sample_condition_list_ID pH 7.4 pH bmse001012 1 temperature 298 K bmse001012 1 stop_ save_ ############################ # Computer software used # ############################ save_software_1 _Software.Sf_category software _Software.Sf_framecode software_1 _Software.Entry_ID bmse001012 _Software.ID 1 _Software.Name TopSpin _Software.Version 2.1 loop_ _Vendor.Name _Vendor.Entry_ID _Vendor.Software_ID 'Bruker Biospin' bmse001012 1 stop_ loop_ _Task.Task _Task.Entry_ID _Task.Software_ID Collection bmse001012 1 Processing bmse001012 1 'Data analysis' bmse001012 1 'Peak picking' bmse001012 1 stop_ save_ ######################### # Experimental detail # ######################### ################################## # NMR Spectrometer definitions # ################################## save_Bruker_700 _NMR_spectrometer.Sf_category NMR_spectrometer _NMR_spectrometer.Sf_framecode Bruker_700 _NMR_spectrometer.Entry_ID bmse001012 _NMR_spectrometer.ID 1 _NMR_spectrometer.Manufacturer Bruker _NMR_spectrometer.Model 'Avance II' _NMR_spectrometer.Field_strength 700 save_ save_TCI_cryoprobe _NMR_spectrometer_probe.Sf_category NMR_spectrometer_probe _NMR_spectrometer_probe.Sf_framecode TCI_cryoprobe _NMR_spectrometer_probe.Entry_ID bmse001012 _NMR_spectrometer_probe.ID 1 _NMR_spectrometer_probe.Details 'single z-axis gradient' _NMR_spectrometer_probe.Manufacturer Bruker _NMR_spectrometer_probe.Model 'TCI CryoProbe' _NMR_spectrometer_probe.Diameter 5 loop_ _NMR_probe.Type _NMR_probe.Entry_ID _NMR_probe.NMR_spectrometer_probe_ID Cryoprobe bmse001012 1 stop_ save_ ############################# # NMR applied experiments # ############################# save_experiment_list _Experiment_list.Sf_category experiment_list _Experiment_list.Sf_framecode experiment_list _Experiment_list.Entry_ID bmse001012 _Experiment_list.ID 1 loop_ _Experiment.ID _Experiment.Name _Experiment.Raw_data_flag _Experiment.Sample_ID _Experiment.Sample_label _Experiment.Sample_state _Experiment.Sample_condition_list_ID _Experiment.Sample_condition_list_label _Experiment.NMR_spectrometer_ID _Experiment.NMR_spectrometer_label _Experiment.Entry_ID _Experiment.Experiment_list_ID 1 '2D J-resolved 1H' yes 1 $sample_1 isotropic 1 $sample_conditions_1 1 $Bruker_700 bmse001012 1 2 '2D [1H,13C]-HSQC' yes 1 $sample_1 isotropic 1 $sample_conditions_1 1 $Bruker_700 bmse001012 1 3 '1D 1H, NOESY' yes 1 $sample_1 isotropic 1 $sample_conditions_1 1 $Bruker_700 bmse001012 1 stop_ loop_ _Experiment_file.Experiment_ID _Experiment_file.Name _Experiment_file.Type _Experiment_file.Directory_path _Experiment_file.Details _Experiment_file.Entry_ID _Experiment_file.Experiment_list_ID 1 1H_1H_JRES text/directory nmr/set01/ 'NMR experiment directory' bmse001012 1 1 00.png image/png nmr/set01/spectra/1H_1H_JRES 'Spectral image' bmse001012 1 1 01.png image/png nmr/set01/spectra/1H_1H_JRES 'Spectral image' bmse001012 1 2 1H_13C_HSQC text/directory nmr/set01/ 'NMR experiment directory' bmse001012 1 2 00.png image/png nmr/set01/spectra/1H_13C_HSQC 'Spectral image' bmse001012 1 2 01.png image/png nmr/set01/spectra/1H_13C_HSQC 'Spectral image' bmse001012 1 3 1H_NOESY text/directory nmr/set01/ 'NMR experiment directory' bmse001012 1 3 00.png image/png nmr/set01/spectra/1H_NOESY 'Spectral image' bmse001012 1 3 01.png image/png nmr/set01/spectra/1H_NOESY 'Spectral image' bmse001012 1 stop_ save_ #################### # NMR parameters # #################### ############################## # Assigned chemical shifts # ############################## ################################ # Chemical shift referencing # ################################ save_chem_shift_reference _Chem_shift_reference.Sf_category chem_shift_reference _Chem_shift_reference.Sf_framecode chem_shift_reference _Chem_shift_reference.Entry_ID bmse001012 _Chem_shift_reference.ID 1 loop_ _Chem_shift_ref.Atom_type _Chem_shift_ref.Atom_isotope_number _Chem_shift_ref.Mol_common_name _Chem_shift_ref.Atom_group _Chem_shift_ref.Chem_shift_units _Chem_shift_ref.Chem_shift_val _Chem_shift_ref.Ref_method _Chem_shift_ref.Ref_type _Chem_shift_ref.Indirect_shift_ratio _Chem_shift_ref.Entry_ID _Chem_shift_ref.Chem_shift_reference_ID H 1 DSS 'methyl protons' ppm 0.00 internal direct 1.000000000 bmse001012 1 C 13 DSS 'methyl carbons' ppm 0.00 internal direct 1.000000000 bmse001012 1 stop_ save_