Atom Nomenclature for 3CX

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 3CX

Atom Name (V3) Atom Name (V2)
OAA OAA
OAB OAB
OAC OAC
OAD OAD
CAE CAE
CAF CAF
CAG CAG
CAH CAH
CAI CAI
CAJ CAJ
CAK CAK
NAL NAL
CAM CAM
CAN CAN
SAO SAO
HOAC HOAC
HOAD HOAD
HAE HAE
HAEA HAEA
HAF HAF
HAFA HAFA
HAG HAG
HAGA HAGA
HAH HAH
HAHA HAHA
HAI HAI
HAIA HAIA
HAJ HAJ
HAJA HAJA
HAK HAK
HAKA HAKA
HNAL HNAL
HAM HAM
HAN HAN