Atom Nomenclature for TPS

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 TPS

Atom Name (V3) Atom Name (V2)
CM2 CM2
N3 N3
C2 C2
S1 S1
C5 C5
C4 C4
CM4 CM4
C6 C6
C7 C7
O7 O7
N1A N1A
C2A C2A
N3A N3A
C4A C4A
N4A N4A
C5A C5A
C6A C6A
C7A C7A
P1 P1
O1 O1
O2 O2
O3 O3
HM21 HM21
HM22 HM22
HM23 HM23
H2 H2
HM41 HM41
HM42 HM42
HM43 HM43
H61 H61
H62 H62
H71 H71
H72 H72
H41N H41N
H42N H42N
H6A H6A
H7A1 H7A1
H7A2 H7A2
HO2 HO2
HO3 HO3