Data Item _pdbx_nmr_chem_shift_ref.ref_method

General

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

Item Description

The chemical shift reference may be either internal (the compound is located in the sample) or external (the compound is in a container external to the sample).

Item Example

 internal

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
external
internal
na not applicable

Controlled Vocabulary at Deposition

Allowed Value Details
external
internal
na not applicable