Atom Nomenclature for FDF

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 FDF

Atom Name (V3) Atom Name (V2)
PA PA
PB PB
C1 C1
O1 O1
O1A O1A
O1B O1B
C2 C2
O2A O2A
O2B O2B
C3 C3
O3A O3A
O3B O3B
C4 C4
C5 C5
C6 C6
C7 C7
C8 C8
C9 C9
C10 C10
C11 C11
C12 C12
C13 C13
C14 C14
C15 C15
F1 F1
F2 F2
H1 H1
H1A H1A
HO1A HO1A
HO1B HO1B
H2 H2
HO3B HO3B
H4 H4
H4A H4A
H4B H4B
H5 H5
H5A H5A
H6 H6
H6A H6A
H7 H7
H9 H9
H9A H9A
H10 H10
H10A H10A
H10B H10B
H11 H11
H11A H11A
H12 H12
H14 H14
H14A H14A
H15 H15
H15A H15A