Atom Nomenclature for HRG

The atom nomenclature in PDB data files was revised with the release of data in the PDB Format Version 3.0. These changes make the PDB atom names used by PDB compliant with existing IUPAC nomenclature for standard amino acid and nucleotides (Pure & Appl. Chem., 70, 117-142, 1998) with the exception of the well established convention for C-terminal atoms OXT and HXT. A small number of additional changes were introduced in Version 3 to make atom labeling more conventional. The following chemical diagrams and tables provide the correspondences between atom names used in Version 3 and Version 2 PDB formats.

Labeled Chemical Diagrams

Chemical diagram with format V3 atom labels (heavy atoms)
Chemical diagram with format V3 atom labels (all atoms)
Chemical diagram with format V2 atom labels (heavy atoms)
Chemical diagram with format V2 atom labels (all atoms)

Atom Name Correspondences for HRG

Atom Name (V3) Atom Name (V2)
N N
CA CA
CB CB
CG CG
CG' CG'
CD CD
NE NE
CZ CZ
NH1 NH1
NH2 NH2
C C
O O
OXT OXT
H HN1A
H2 HN2
HA HA
HB1 HB1
HB2 HB2
HG1 HG1
HG2 HG2
HG'1 HG'1
HG'2 HG'2
HD1 HD1
HD2 HD2
HNE HNE
HN1 HN1
HN21 HN21
HN22 HN22
HXT HXT