Atom Nomenclature for BPQ

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 BPQ

Atom Name (V3) Atom Name (V2)
C2 C2
N1 N1
C6 C6
O6 O6
C5 C5
C7 C7
C10 C10
N11 N11
C8 C8
N9 N9
C4 C4
N3 N3
N2 N2
C14 C14
O15 O15
C20 C20
C17 C17
C19 C19
C18 C18
O16 O16
HN1 HN1
H10 H10
H10A H10A
HN11 HN11
H8 H8
HN9 HN9
HN2 HN2
HN2A HN2A
H20 H20
H20A H20A
H20B H20B
H19 H19
H19A H19A
H19B H19B
H18 H18
H18A H18A
H18B H18B