Atom Nomenclature for Q18

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 Q18

Atom Name (V3) Atom Name (V2)
C1 C1
C2 C2
C3 C3
N4 N4
C5 C5
C6 C6
C7 C7
C8 C8
C9 C9
C10 C10
C11 C11
C12 C12
C13 C13
C14 C14
O15 O15
C16 C16
C17 C17
C18 C18
C19 C19
C20 C20
C21 C21
N22 N22
C23 C23
C24 C24
C25 C25
C26 C26
C27 C27
O28 O28
O29 O29
H1 H1
H1A H1A
H2 H2
H2A H2A
H3 H3
H3A H3A
H5 H5
H5A H5A
H6 H6
H6A H6A
H7 H7
H7A H7A
H8 H8
H8A H8A
H12 H12
H13 H13
H18 H18
HN22 HN22
H23 H23
H24 H24
H25 H25
H26 H26
H27 H27
HO29 HO29