Data Category chem_shift_ref
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General 
- Category name
- chem_shift_ref
- Required in PDB entries
- No
- Category group membership
- chem_shift_reference
- Used in current PDB entries
- No
Category Relationship Diagrams 
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Category Description
Items in the chem_shift_ref category provide the chemical shift referencing values used in assigning the chemical shift positions for peaks in spectral peak lists and assigned atom chemical shifts.
Category Data Items
- _chem_shift_ref.atom_isotope_number
- _chem_shift_ref.atom_type
- _chem_shift_ref.chem_shift_reference_id
- _chem_shift_ref.entry_id
- _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.concentration_units
- _chem_shift_ref.concentration_val
- _chem_shift_ref.correction_val
- _chem_shift_ref.correction_val_cit_id
- _chem_shift_ref.correction_val_cit_label
- _chem_shift_ref.external_ref_axis
- _chem_shift_ref.external_ref_loc
- _chem_shift_ref.external_ref_sample_geometry
- _chem_shift_ref.indirect_shift_ratio
- _chem_shift_ref.indirect_shift_ratio_cit_id
- _chem_shift_ref.indirect_shift_ratio_cit_label
- _chem_shift_ref.rank
- _chem_shift_ref.ref_correction_type
- _chem_shift_ref.ref_method
- _chem_shift_ref.ref_type
- _chem_shift_ref.solvent