Atom Nomenclature for PIU

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 PIU

Atom Name (V3) Atom Name (V2)
S1 S1
O1 O1
O2 O2
N1 N1
C1 C1
C3 C3
C4 C4
C6 C6
C2 C2
C5 C5
C15 C15
C16 C16
N2 N2
C7 C7
C9 C9
C10 C10
C11 C11
C8 C8
C12 C12
C13 C13
C14 C14
HN11 1HN1
HN12 2HN1
H1 H1
H3 H3
H4 H4
H6 H6
H151 1H15
H152 2H15
H161 1H16
H162 2H16
H7 H7
H9 H9
H121 1H12
H122 2H12
H123 3H12
H131 1H13
H132 2H13
H133 3H13
H141 1H14
H142 2H14
H143 3H14