Atom Nomenclature for TCK

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 TCK

Atom Name (V3) Atom Name (V2)
S S
O1S O1S
O2S O2S
C1 C1
C2 C2
C3 C3
C4 C4
C5 C5
C6 C6
C7 C7
N N
CA CA
C C
O O
CB CB
CG CG
CD CD
CE CE
NZ NZ
CM CM
CL1 CL1
H2 H2
H3 H3
H5 H5
H6 H6
H1 H1
H2A H2A
H3A H3A
H H
HA HA
HB2 HB2
HB3 HB3
HG2 HG2
HG3 HG3
HD2 HD2
HD3 HD3
HE2 HE2
HE3 HE3
HZ1 HZ1
HZ2 HZ2
HM1 HM1
HM2 HM2