Atom Nomenclature for BM3

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 BM3

Atom Name (V3) Atom Name (V2)
C1 C1
O1 O1
C2 C2
N2 N2
C7 C7
O7 O7
C8 C8
C3 C3
O3 O3
C4 C4
O4 O4
C5 C5
C6 C6
O6 O6
O5 O5
H1 H1
HO1 HA
H2 H2
HN2 HB
H3 H3
H81 H8C1
H82 H8C2
H83 H8C3
HO3 HC
H4 H4
HO4 HD
H5 H5
H61 H6C1
H62 H6C2
HO6 H6