Atom Nomenclature for PG9

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 PG9

Atom Name (V3) Atom Name (V2)
N N
CA CA
CB CB
CG1 CG1
CD1 CD1
CE CE
CD2 CD2
CG2 CG2
C C
O O
OXT OXT
H 1HN
H2 2HN
HA HA
HG1 HG1
HD1 HD1
HE HE
HD2 HD2
HG2 HG2
HXT HXT