RCSB PDB Protein Data Bank A Member of the wwPDB
An Information Portal to Biological Macromolecular Structures
PDB Home |

Item _chem_shift_ref.atom_group


Description


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

Category

chem_shift_ref

Item Examples


Example 1:

'methyl protons'

Mandatory Code

yes

Data Type Code

line

Enumeration Values

Item Value Description
methyl carbon n.a.
methyl carbons n.a.
methyl protons n.a.
methylene protons n.a.
nitrogen n.a.
protons n.a.

 

© RCSB PDB