Atom Nomenclature for VXX

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 VXX

Atom Name (V3) Atom Name (V2)
C1 C1
CO1 CO1
CO2 CO2
CM1 CM1
CM2 CM2
OM OM
CZ CZ
CC CC
CV CV
O1 O1
O2 O2
O3 O3
C9 C9
HO1 HO1
HO2 HO2
HM1 HM1
HVC1 1HVC
HVC2 2HVC
HVC3 3HVC
H3 H3
H9C1 1H9C
H9C2 2H9C
H9C3 3H9C