Atom Nomenclature for NPG

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 NPG

Atom Name (V3) Atom Name (V2)
O61 O61
O62 O62
C6 C6
C5 C5
C4 C4
O31 O31
C3 C3
N1 N1
O11 O11
O12 O12
C2 C2
C1 C1
CG CG
CD1 CD1
CD2 CD2
CE1 CE1
CE2 CE2
CZ CZ
H62 H62
H51 1H5
H52 2H5
H41 1H4
H42 2H4
HN1 HN1
H12 H12
H1 H1
HD1 HD1
HD2 HD2
HE1 HE1
HE2 HE2
HZ HZ