Atom Nomenclature for AAA

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 AAA

Atom Name (V3) Atom Name (V2)
C1 C1
C1A C1A
C1B C1B
O1B O1B
C2 C2
C3 C3
C4 C4
C4A C4A
C5 C5
C6 C6
N7 N7
C8 C8
C8A C8A
N8B N8B
O8B O8B
C9 C9
C10 C10
BR1 BR1
C11 C11
C12 C12
C13 C13
C14 C14
BR2 BR2
H1B1 1H1B
H1B2 2H1B
H1B3 3H1B
H2 H2
H3 H3
H4A1 1H4A
H4A2 2H4A
H4A3 3H4A
H5 H5
HN7 HN7
H8 H8
HN81 1HN8
HN82 2HN8
H11 H11
H12 H12
H13 H13