Atom Nomenclature for CEW

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 CEW

Atom Name (V3) Atom Name (V2)
S1 S1
C2 C2
C3 C3
C3' C3'
C4 C4
C4' C4'
O4A O4A
O4B O4B
N5 N5
C6 C6
C7 C7
C8 C8
O9 O9
N10 N10
C11 C11
O12 O12
C13 C13
N16 N16
O17 O17
C18 C18
C14 C14
C15 C15
S16 S16
C17 C17
N18 N18
N19 N19
H2 H2
H2A H2A
H3' H3'
H3'A H3'A
H3'B H3'B
HO4B HO4B
HN5 HN5
H6 H6
H7 H7
H8 H8
HN10 HN10
H18 H18
H18A H18A
H18B H18B
H15 H15
H17 H17
HN18 HN18
HN1A HN1A
HN19 HN19