Atom Nomenclature for CPU

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 CPU

Atom Name (V3) Atom Name (V2)
C1 C1
C2 C2
C3 C3
C4 C4
C5 C5
C6 C6
N1 N1
C7 C7
C8 C8
C9 C9
C10 C10
O1 O1
N2 N2
C11 C11
C12 C12
C13 C13
C14 C14
C15 C15
C16 C16
H1 H1
H2 H2
H3 H3
H4 H4
H5 H5
HN1 HN1
H72 H72
H71 H71
H82 H82
H81 H81
H92 H92
H91 H91
HN2 HN2
H11 H11
H121 H121
H122 H122
H131 H131
H132 H132
H141 H141
H142 H142
H151 H151
H152 H152
H161 H161
H162 H162