Atom Nomenclature for TY2

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 TY2

Atom Name (V3) Atom Name (V2)
N N
CA CA
C C
O O
CB CB
CG CG
CD1 CD1
CD2 CD2
CE1 CE1
CE2 CE2
CZ CZ
OH OH
NE2 NE2
OXT OXT
H HN1
H2 HA2
HA HB
HA1 HA1
HB2 HB2
HXT HOT
HD1 HA
HC HC
HD HD
HE21 HE21
HE22 HE22
HH HH