Atom Nomenclature for EUP

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 EUP

Atom Name (V3) Atom Name (V2)
N NAD
CA CAE
CAN CAN
OAO OAO
CAP CAP
NAQ NAQ
C CAF
O O
H H16
HA H17
H18 H18
H19 H19
H20 H20
H21 H21
H22 H22
H23 H23
H2 H2
OXT OXT
HXT HXT