Atom Nomenclature for HL2

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 HL2

Atom Name (V3) Atom Name (V2)
C C
N N
O O
CA CA
CB CB
CG CG
OH OH
CD1 CD1
CD2 CD2
OXT OXT
H2 HN
H HNA
HA HA
HB HB
HG HG
HOH HOH
HD1 HD1
HD1A HD1A
HD1B HD1B
HD2 HD2
HD2A HD2A
HD2B HD2B
HXT HXT