Atom Nomenclature for OTR

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 OTR

Atom Name (V3) Atom Name (V2)
C2 C2
C3 C3
C4 C4
O4 O4
C5 C5
C6 C6
C1 C1
C7 C7
O7 O7
C8 C8
N8 N8
HN81 1HN8
HN82 2HN8
H81 1H8
H82 2H8
H7 H7
HO7 HO7
H6 H6
H5 H5
HO4 HO4
H3 H3
H2 H2