Atom Nomenclature for PBG

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 PBG

Atom Name (V3) Atom Name (V2)
CHA CHA
C1A C1A
C2A C2A
C3A C3A
C4A C4A
NA NA
C5A C5A
C6A C6A
O1A O1A
O2A O2A
C7A C7A
C8A C8A
C9A C9A
O3A O3A
O4A O4A
N1 N1
HHA2 2HHA
HHA1 1HHA
H4A1 1H4A
HA HA
H5A2 2H5A
H5A1 1H5A
H2AO OH2A
H7A2 2H7A
H7A1 1H7A
H8A2 2H8A
H8A1 1H8A
H4AO OH4A
H12 2H1
H11 1H1