Atom Nomenclature for A3M

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 A3M

Atom Name (V3) Atom Name (V2)
C1 C1
C2 C2
N3 N3
C4 C4
C5 C5
C14 C14
C15 C15
C16 C16
C17 C17
O18 O18
N19 N19
C26 C26
HC11 1HC1
HC12 2HC1
HC21 1HC2
HC22 2HC2
HC41 1HC4
HC42 2HC4
HC51 1HC5
HC52 2HC5
H15 H15
H16 H16
H171 1H17
H172 2H17
H173 3H17
H191 1H19
H192 2H19
H261 1H26
H262 2H26
H263 3H26