Data Item _pdbx_nmr_chem_shift_reference.carbon_shifts_flag
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General 
- Item name
- _pdbx_nmr_chem_shift_reference.carbon_shifts_flag
- Category name
- pdbx_nmr_chem_shift_reference
- Attribute name
- carbon_shifts_flag
- Required in PDB entries
- no
- Used in current PDB entries
- No
Item Description
A value indicating if 13C chemical shifts are being deposited and if IUPAC chemical shift referencing was used. This item
is a user interface item that is used to trigger the automated population of chemical shift referencing tags if IUPAC
chemical shift referencing parameters have been used.
Item Example
yes with IUPAC referencing
Data Type 
- Data type code
- line
- Data type detail
- char item types / multi-word items ...
- Primitive data type code
- char
- Regular expression
- [][ \t_(),.;:"&<>/\{}'`~!@#$%?+=*A-Za-z0-9|^-]*
Controlled Vocabulary
| Allowed Value | Details |
|---|---|
| no | 13C chemical shifts are not being deposited |
| yes | 13C chemical shifts are being deposited |
| yes with IUPAC referencing | 13C chemical shifts are being deposited and the shifts are referenced using the IUPAC recommendations |
Controlled Vocabulary at Deposition
| Allowed Value | Details |
|---|---|
| no | 13C chemical shifts are not being deposited |
| yes | 13C chemical shifts are being deposited |
| yes with IUPAC referencing | 13C chemical shifts are being deposited and the shifts are referenced using the IUPAC recommendations |