Atom Nomenclature for CBS

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 CBS

Atom Name (V3) Atom Name (V2)
C1A AC1
C2A AC2
C3A AC3
C4A AC4
C5A AC5
C6A AC6
C7A AC7
C8A AC8
N2A AN2
O1A AO1
O3A AO3
O4A AO4
O5A AO5
O6A AO6
O7A AO7
C1B BC1
C2B BC2
C3B BC3
C4B BC4
C5B BC5
C6B BC6
C7B BC7
C8B BC8
N2B BN2
O1B BO1
O3B BO3
O5B BO5
O6B BO6
O7B BO7
H1A AH1
H2A AH2
H3A AH3
H4A AH4
H5A AH5
H61A AH61
H62A AH62
H81A AH81
H82A AH82
H83A AH83
HN2A AHN2
HO3A AHO3
HO4A AHO4
HO6A AHO6
H1B BH1
H2B BH2
H3B BH3
H4B BH4
H5B BH5
H61B BH61
H62B BH62
H81B BH81
H82B BH82
H83B BH83
HN2B BHN2
HO1B BHO1
HO3B BHO3
HO6B BHO6