Atom Nomenclature for NIM

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 NIM

Atom Name (V3) Atom Name (V2)
O4 O4
N2 N2
O3 O3
C5 C5
C4 C4
C3 C3
C2 C2
N1 N1
S1 S1
O1 O1
O2 O2
C1 C1
C6 C6
C7 C7
O5 O5
C8 C8
C13 C13
C12 C12
C11 C11
C10 C10
C9 C9
H4 H4
H3 H3
HN1 HN1
H11A 1H1
H12A 2H1
H13A 3H1
H6 H6
H13 H13
H12 H12
H11 H11
H10 H10
H9 H9