Atom Nomenclature for SUN

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 SUN

Atom Name (V3) Atom Name (V2)
N N
CA CA
CB CB
OG OG
C C
O O
O1 O1
P1 P1
N1 N1
C2 C2
C1 C1
O2 O2
C3 C3
C4 C4
OXT OXT
HN1 1HN
HN2 2HN
HA HA
HBC1 1HBC
HBC2 2HBC
HOT HOT
H2C1 1H2C
H2C2 2H2C
H2C3 3H2C
H1C1 1H1C
H1C2 2H1C
H1C3 3H1C
H3C1 1H3C
H3C2 2H3C
H4C1 1H4C
H4C2 2H4C
H4C3 3H4C