Atom Nomenclature for PMR

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 PMR

Atom Name (V3) Atom Name (V2)
MG MG
CBB CBB
CAB CAB
C3B C3B
C2B C2B
CMB CMB
C1B C1B
CHB CHB
NB NB
C4B C4B
CHC CHC
C1C C1C
NC NC
C2C C2C
CMC CMC
C3C C3C
CAC CAC
CBC CBC
C4C C4C
CHD CHD
C1D C1D
C2D C2D
CMD CMD
ND ND
C4D C4D
C3D C3D
CAD CAD
OAD OAD
CBD CBD
CGD CGD
O1D O1D
O2D O2D
C2O C2O
CHA CHA
C1A C1A
NA NA
C4A C4A
C3A C3A
CMA CMA
C2A C2A
CAA CAA
CBA CBA
CGA CGA
O1A O1A
O2A O2A
HBB HBB
HBBA HBBA
HAB HAB
HMB HMB
HMBA HMBA
HMBB HMBB
HHB HHB
HHC HHC
HMC HMC
HMCA HMCA
HMCB HMCB
HAC HAC
HACA HACA
HBC HBC
HBCA HBCA
HBCB HBCB
HHD HHD
HMD HMD
HMDA HMDA
HMDB HMDB
HBD HBD
H2O H2O
H2OA H2OA
H2OB H2OB
HMA HMA
HMAA HMAA
HMAB HMAB
HAA HAA
HAAA HAAA
HBA HBA
HBAA HBAA
HO2A HO2A