Atom Nomenclature for CQU

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 CQU

Atom Name (V3) Atom Name (V2)
N3 N3
C7 C7
C6 C6
C13 C13
C21 C21
C8 C8
C16 C16
C19 C19
C22 C22
N18 N18
N20 N20
N17 N17
C14 C14
C12 C12
C15 C15
C1 C1
C2 C2
C5 C5
N9 N9
C11 C11
N10 N10
N4 N4
HN3 HN3
H6 H6
H13 H13
H8 H8
H16 H16
H19 H19
H22 H22
H22A H22A
H22B H22B
HN18 HN18
H15 H15
HN9 HN9
H11 H11