Atom Nomenclature for CIA

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 CIA

Atom Name (V3) Atom Name (V2)
C3 C3
C2 C2
C1 C1
C6 C6
C7 C7
C8 C8
N9 N9
C5 C5
C4 C4
C13 C13
N12 N12
C17 C17
O20 O20
C16 C16
N15 N15
C31 C31
O32 O32
C11 C11
C10 C10
C18 C18
C22 C22
C27 C27
C26 C26
C25 C25
O30 O30
C29 C29
O28 O28
C24 C24
C23 C23
H3 H3
H2 H2
H1 H1
HN9 HN9
H4 H4
H13 H13
H161 1H16
H162 2H16
H11 H11
H101 1H10
H102 2H10
H181 1H18
H182 2H18
H183 3H18
H27 H27
H26 H26
H291 1H29
H292 2H29
H23 H23