Data Item _chem_shift_ref.atom_group

General

Item name
_chem_shift_ref.atom_group
Category name
chem_shift_ref
Attribute name
atom_group
Required in PDB entries
yes
Used in currrent PDB entries
No

Item Description

Group of atoms within a molecule whose chemical shift was used as the standard chemical shift reference for the defined observed nuclei.

Item Example

 
'methyl protons'

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|^-]*
Values limited by enumeration list
no

Controlled Vocabulary

Allowed Value Details
methyl carbon
methyl carbons
methyl protons
methylene protons
nitrogen
protons

Controlled Vocabulary at Deposition

Allowed Value Details
methyl carbon
methyl carbons
methyl protons
methylene protons
nitrogen
protons