Atom Nomenclature for SGX

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 SGX

Atom Name (V3) Atom Name (V2)
N N
CA CA
C C
O O
CB CB
OG OG
O1 O1
P2 P2
N3 N3
O2 O2
C1 C1
OXT OXT
H H
HA1 1HA
HB2 2HB
H3N1 1H3N
H3N2 2H3N
H1C1 1H1C
H1C2 2H1C
H1C3 3H1C
HA HA
H1 H1
H2 H2