Atom Nomenclature for TCP

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 TCP

Atom Name (V3) Atom Name (V2)
CP CP
O5' O5*
C5' C5*
C4' C4*
O4' O4*
C3' C3*
O3' O3*
C2' C2*
C1' C1*
N1 N1
C2 C2
O2 O2
N3 N3
C4 C4
O4 O4
C5 C5
C5M C5M
C6 C6
HP1 1HP
HP2 2HP
HP3 3HP
H5' 1H5*
H5'' 2H5*
H4' H4*
H3' H3*
HO3' *HO3
H2' 1H2*
H2'' 2H2*
H1' H1*
HN3 HN3
H71 1H5M
H72 2H5M
H73 3H5M
H6 H6