Atom Nomenclature for B3E

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 B3E

Atom Name (V3) Atom Name (V2)
N N
CA CB
CG CG
CD CD
CE CE
OF2 OF2
OF1 OF1
CB CA
C C
O O
OXT OXT
H H
H2 H2
HA HB
HG2 HG2
HG3 HG3
HD2 HD2
HD3 HD3
HOF1 HOF1
HB1 HA1
HB2 HA2
HXT HXT