Atom Nomenclature for ITB

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 ITB

Atom Name (V3) Atom Name (V2)
C1 C1
C10 C10
C14 C14
O19 O19
N15 N15
C20 C20
C21 C21
O23 O23
O22 O22
S16 S16
O18 O18
O17 O17
C9 C9
C8 C8
C11 C11
O13 O13
O12 O12
C7 C7
C6 C6
C5 C5
C4 C4
C3 C3
C2 C2
H201 1H20
H202 2H20
HO23 HO23
HO12 HO12
H7 H7
H5 H5
H4 H4
H3 H3
H2 H2