Atom Nomenclature for PCV

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 PCV

Atom Name (V3) Atom Name (V2)
N1 N1
C8 C8
O1 O1
C9 C9
C7 C7
C1 C1
C2 C2
C4 C4
C5 C5
N2 N2
O3 O3
C3 C3
O2 O2
O4 O4
HC91 1HC9
HC92 2HC9
HC71 1HC7
HC72 2HC7
HC1 HC1
H22 2H2
HC41 1HC4
HC42 2HC4
HC51 1HC5
HC52 2HC5
HN21 1HN2
HN22 2HN2
HO3 HO3
HO4 HO4