Atom Nomenclature for CIO

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 CIO

Atom Name (V3) Atom Name (V2)
O25 O25
C23 C23
O24 O24
C4 C4
C5 C5
C6 C6
C3 C3
C2 C2
C1 C1
C21 C21
N22 N22
C7 C7
C8 C8
C9 C9
C10 C10
O11 O11
C12 C12
C13 C13
C20 C20
O14 O14
C15 C15
C16 C16
C17 C17
C18 C18
C19 C19
H25 H25
H4 H4
H51 1H5
H52 2H5
H61 1H6
H62 2H6
H31 1H3
H32 2H3
H21 1H2
H22 2H2
H8 H8
H9 H9
H121 1H12
H122 2H12
H123 3H12
H20 H20
H15 H15
H161 1H16
H162 2H16
H171 1H17
H172 2H17
H181 1H18
H182 2H18
H191 1H19
H192 2H19