Atom Nomenclature for NCD

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 NCD

Atom Name (V3) Atom Name (V2)
C6 C6
C61 C61
O61 O61
O62 O62
N1 N1
C2 C2
O2 O2
N3 N3
C5 C5
C4 C4
O4 O4
O5 O5
H61 1H6
H611 1H61
H11 1H1
H31 1H3
H32 2H3
H51 1H5
H52 2H5
HO51 1HO5