Atom Nomenclature for IMB

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 IMB

Atom Name (V3) Atom Name (V2)
N1 N1
C2 C2
C3 C3
C4 C4
C5 C5
C6 C6
C9 C9
C10 C10
C11 C11
C12 C12
N17 N17
C18 C18
P20 P20
P21 P21
O23 O23
O25 O25
O26 O26
O28 O28
O30 O30
O31 O31
H5 H5
H6 H6
H9 H9
H10 H10
H11 H11
H12 H12
H17 H17
H18 H18
H25 H25
H26 H26
H28 H28
H31 H31