Atom Nomenclature for FAI

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 FAI

Atom Name (V3) Atom Name (V2)
OP2 OP2
P P
OP1 OP1
OP3 OP3
O3 O3
C4 C4
C C
O O
C3 C3
O3' O3'
C2 C2
O2' O2'
C1 C1
N N
C5 C5
N1 N1
C3A C3A
C6 C6
O5 O5
N2 N2
C7A C7A
N3 N3
C8 C8
O6 O6
HOP2 HOP2
HOP3 HOP3
H41 1H4
H42 2H4
H H
H3 H3
HO3' HO3'
H2 H2
HO2' HO2'
H1 H1
H5 H5
HN21 1HN2
HN22 2HN2
HN3 HN3
H8 H8