Atom Nomenclature for FIP

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 FIP

Atom Name (V3) Atom Name (V2)
C3 C3
C9 C9
C8 C8
C4 C4
C2 C2
N1 N1
C7 C7
C5 C5
C6 C6
F F
C3P C3P
C2P C2P
C1P C1P
P P
OP1 OP1
OP2 OP2
OP3 OP3
OP4 OP4
H4 H4
H2 H2
HN1 HN1
H7 H7
H6 H6
H3P1 1H3P
H3P2 2H3P
H2P1 1H2P
H2P2 2H2P
H1P1 1H1P
H1P2 2H1P
HO2 HO2
HO3 HO3