Atom Nomenclature for TNR

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 TNR

Atom Name (V3) Atom Name (V2)
OXT OB
C C
O OA
CA CA
N N
CB CB
O1 O1
C1 C1
C2 C2
N2 N2
C7 C7
C8 C8
O7 O7
C3 C3
O3 O3
C4 C4
O4 O4
C5 C5
O5 O5
C6 C6
O6 O6
HB HB
HCA HCA
H 1HN
H2 2HN
HB2 1HCB
HB3 2HCB
HC1 HC1
HC2 HC2
HN2 HN2
HC81 1HC8
HC82 2HC8
HC83 3HC8
HC3 HC3
HO3 HO3
HC4 HC4
HO4 HO4
HC5 HC5
HC61 1HC6
HC62 2HC6
HO6 HO6