Atom Nomenclature for LIG

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 LIG

Atom Name (V3) Atom Name (V2)
N1 N1
N3 N3
C4 C4
C5 C5
C6 C6
C7 C7
C8 C8
C10 C10
N12 N12
C13 C13
C15 C15
C17 C17
C20 C20
C21 C21
C22 C22
C24 C24
C26 C26
C28 C28
HN1 HN1
HC8 HC8
HC10 HC10
HC13 HC13
HC15 HC15
H171 1H17
H172 2H17
HC22 HC22
HC24 HC24
HC26 HC26
HC28 HC28