Atom Nomenclature for DTB

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 DTB

Atom Name (V3) Atom Name (V2)
CN CN
O O
N2 N2
CR CR
CS CS
N1 N1
CT CT
CE CE
CD CD
CG CG
CB CB
CA CA
C C
OI1 OI1
OI2 OI2
HN2 HN2
HCR HCR
HCS HCS
HN1 HN1
HCT1 HCT1
HCT2 HCT2
HCT3 HCT3
HCE1 HCE1
HCE2 HCE2
HCD1 HCD1
HCD2 HCD2
HCG1 HCG1
HCG2 HCG2
HCB1 HCB1
HCB2 HCB2
HCA1 HCA1
HCA2 HCA2
HOI2 HOI2