Atom Nomenclature for WG8

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 WG8

Atom Name (V3) Atom Name (V2)
CAF CAF
CAH CAH
CAQ CAQ
CAG CAG
CAD CAD
CAE CAE
CAO CAO
OAC OAC
CAR CAR
NAK NAK
CAP CAP
CAN CAN
N N
SAL SAL
CB CB
CA CA
C C
OXT OXT
O O
HAF HAF
HAH HAH
HAG HAG
HAD HAD
HAE HAE
HAC HAC
HA HA
HB1C HB1C
HB2C HB2C
H H