Atom Nomenclature for AP

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 AP

Atom Name (V3) Atom Name (V2)
N1 N1
C1 C1
C2 C2
C3 C3
C3A C3A
C4 C4
C5 C5
C5A C5A
C6 C6
C7 C7
C8 C8
C8A C8A
C9 C9
C10 C10
C1A C1A
C11 C11
C12 C12
HN1 1HN
HN2 2HN
H2 H2
H3 H3
H4 H4
H5 H5
H6 H6
H7 H7
H8 H8
H9 H9
H10 H10