Atom Nomenclature for GNX

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 GNX

Atom Name (V3) Atom Name (V2)
N2 N
C1 C1
O1 O1
S1 S1
C2 C2
C3 C3
O3 O3
C4 C4
O4 O4
C5 C5
O5 O5
C6 C6
O6 O6
O12 O12
S12 S12
O1S O1S
O22 O22
O2S O2S
O32 O32
O3S O3S
HN21 HN
H1 H1
HO1 HO1
H2 H2
H3 H3
H4 H4
HO4 HO4
H5 H5
H61 H6
H62 H6A
HO6 HO6
HO12 HO12
HO3S HO3S