Atom Nomenclature for CCH

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 CCH

Atom Name (V3) Atom Name (V2)
FE FE
NA N A
NB N B
NC N C
ND N D
C1A C1A
CHA CHA
C4D C4D
C1B C1B
CHB CHB
C4A C4A
C1C C1C
CHC CHC
C4B C4B
C1D C1D
CHD CHD
C4C C4C
C2A C2A
CAA CAA
C3A C3A
CMA CMA
CBA CBA
CGA CGA
O1A O1A
O2A O2A
C2B C2B
CMB CMB
C3B C3B
CAB CAB
OBB OBB
C2C C2C
CMC CMC
C3C C3C
CAC CAC
CBC CBC
C2D C2D
CMD CMD
C3D C3D
CAD CAD
CBD CBD
CGD CGD
O1D O1D
O2D O2D
HHA HHA
HHB HHB
HHC HHC
HHD HHD
HAA1 HAA1
HAA2 HAA2
HMA1 HMA1
HMA2 HMA2
HMA3 HMA3
HBA1 HBA1
HBA2 HBA2
HO1A HO1A
HMB1 HMB1
HMB2 HMB2
HMB3 HMB3
HAB HAB
HMC1 HMC1
HMC2 HMC2
HMC3 HMC3
HAC HAC
HBC1 HBC1
HBC2 HBC2
HMD1 HMD1
HMD2 HMD2
HMD3 HMD3
HAD1 HAD1
HAD2 HAD2
HBD1 HBD1
HBD2 HBD2
HO1D HO1D