Data Item _pdbx_nmr_chem_shift_ref.external_ref_axis

General

Item name
_pdbx_nmr_chem_shift_ref.external_ref_axis
Category name
pdbx_nmr_chem_shift_ref
Attribute name
external_ref_axis
Required in PDB entries
no
Used in currrent PDB entries
No

Item Description

The axis of the external chemical shift reference sample relative to the static field (Bo) of the spectrometer.

Additional Descriptive Information for Depositors

 When external (capillary) is used as a referencing method, the axis of the external chemical shift reference sample relative to the static field (Bo) of the spectrometer.

Item Example

 parallel

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
parallel
perpendicular

Controlled Vocabulary at Deposition

Allowed Value Details
parallel
perpendicular