Atom Nomenclature for 3AG

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 3AG

Atom Name (V3) Atom Name (V2)
C1 C1
C2 C2
C3 C3
C4 C4
O1 O1
C5 C5
C6 C6
N1 N1
C7 C7
C8 C8
C9 C9
O2 O2
P1 P1
O3 O3
O4 O4
P2 P2
O5 O5
O6 O6
O7 O7
HC11 1HC1
HC12 2HC1
HC13 3HC1
HC31 1HC3
HC32 2HC3
HC33 3HC3
HC4 HC4
HC51 1HC5
HC52 2HC5
HC61 1HC6
HC62 2HC6
HC71 1HC7
HC72 2HC7
HC81 1HC8
HC82 2HC8
HC91 1HC9
HC92 2HC9
HC93 3HC9