Atom Nomenclature for CDC

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 CDC

Atom Name (V3) Atom Name (V2)
N1 N1
C2 C2
N3 N3
C4 C4
C5 C5
C6 C6
O2 O2
N4 N4
C1' C1*
C2' C2*
O2' O2*
C3' C3*
C4' C4*
O4' O4*
O3' O3*
C5' C5*
O5' O5*
PA PA
O1A O1A
O2A O2A
O3A O3A
PB PB
O1B O1B
O2B O2B
O3B O3B
C14 C14
C15 C15
N11 N11
C16 C16
C17 C17
C18 C18
H5 H5
H6 H6
H41 1H4
H42 2H4
H1' H1*
H2' H2*
HO'2 2HO*
H3' H3*
H4' H4*
H3T H3T
H5'1 1H5*
H5'2 2H5*
HO2A HO2A
H141 1H14
H142 2H14
H151 1H15
H152 2H15
H161 1H16
H162 2H16
H163 3H16
H171 1H17
H172 2H17
H173 3H17
H181 1H18
H182 2H18
H183 3H18