Atom Nomenclature for HSM

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 HSM

Atom Name (V3) Atom Name (V2)
N N
CA CA
CB CB
CG CG
ND1 ND1
CD2 CD2
CE1 CE1
NE2 NE2
H1 1H
H2 2H
HA1 1HA
HA2 2HA
HB1 1HB
HB2 2HB
HD2 HD2
HE1 HE1
HE2 HE2