Atom Nomenclature for 2D3

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 2D3

Atom Name (V3) Atom Name (V2)
CAA CAA
OAI OAI
CAK CAK
OAC OAC
CAO CAO
CAL CAL
CAB CAB
NAG NAG
NAH NAH
CAN CAN
CAM CAM
CAE CAE
CAD CAD
NAF NAF
OAJ OAJ
HAA1 HAA1
HAA2 HAA2
HAA3 HAA3
HAB1 HAB1
HAB2 HAB2
HAB3 HAB3
HAG HAG
HAE HAE
HAD HAD