Atom Nomenclature for SYM

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 SYM

Atom Name (V3) Atom Name (V2)
CB CB
CG1 CG1
CG2 CG2
CD CD
OE1 OE1
OE2 OE2
C C
OT1 OT1
OT2 OT2
N N
CA CA
HB1 1HB
HB2 2HB
HG1 HG1
HG21 1HG2
HG22 2HG2
HG23 3HG2
HE1 HE1
HN1 1HN
HN2 2HN
HA HA