Atom Nomenclature for I3N

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 I3N

Atom Name (V3) Atom Name (V2)
C1 C1
O2 O2
C3 C3
C4 C4
C5 C5
C6 C6
C7 C7
C8 C8
N9 N9
C10 C10
C11 C11
C12 C12
C13 C13
O14 O14
O15 O15
C16 C16
C17 C17
C18 C18
C19 C19
C20 C20
C21 C21
C22 C22
C23 C23
H11 1H1
H12 2H1
H13 3H1
H4 H4
H7 H7
H8 H8
H121 1H12
H122 2H12
HXT HXT
H161 1H16
H162 2H16
H163 3H16
H171 1H17
H172 2H17
H19 H19
H20 H20
H21 H21
H22 H22
H23 H23