Atom Nomenclature for SMS

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 SMS

Atom Name (V3) Atom Name (V2)
S2 S2
N1 N1
O10 O10
O9 O9
O8 O8
C1 C1
C2 C2
C3 C3
C4 C4
C5 C5
C6 C6
O3 O3
O5 O5
S1 S1
O7 O7
O6 O6
O4 O4
O2 O2
C7 C7
C9 C9
C8 C8
O1 O1
HN11 1HN1
HN12 2HN1
HC11 1HC1
HC12 2HC1
HC3 HC3
HC4 HC4
HC5 HC5
HC61 1HC6
HC62 2HC6
HC91 1HC9
HC92 2HC9
HC93 3HC9
HC81 1HC8
HC82 2HC8
HC83 3HC8