Atom Nomenclature for QSN

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 QSN

Atom Name (V3) Atom Name (V2)
N1 N1
O2 O2
O3 O3
C4 C4
C5 C5
C6 C6
C8 C8
C9 C9
C10 C10
N12 N12
C14 C14
N15 N15
C16 C16
O17 O17
N18 N18
S20 S20
O21 O21
O22 O22
C23 C23
O27 O27
N28 N28
C29 C29
N31 N31
C32 C32
C34 C34
H6 H6
H10 H10
HN12 HN12
HN18 HN18
H23 H23
H23A H23A
H23B H23B
H29 H29
H32 H32
H34 H34