Atom Nomenclature for CLI

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 CLI

Atom Name (V3) Atom Name (V2)
O19 O19
C16 C16
O18 O18
C12 C12
C6 C6
C2 C2
C1 C1
C5 C5
C11 C11
O14 O14
O15 O15
N7 N7
C3 C3
C8 C8
C13 C13
CL17 CL17
C9 C9
C4 C4
CL10 CL10
H19 H19
H121 1H12
H122 2H12
H61 1H6
H62 2H6
H14 H14
HN7 HN7
HC8 HC8
HC9 HC9