Atom Nomenclature for SFG

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 SFG

Atom Name (V3) Atom Name (V2)
N N
CA CA
C C
O O
OXT OXT
CB CB
CG CG
CD CD
NE NE
C5' C5'
C4' C4'
O4' O4'
C3' C3'
O3' O3'
C2' C2'
O2' O2'
C1' C1'
N9 N9
C8 C8
N7 N7
C5 C5
C6 C6
N6 N6
N1 N1
C2 C2
N3 N3
C4 C4
HN1 HN1
HN2 HN2
HA HA
HXT HXT
HB1 HB1
HB2 HB2
HG1 HG1
HG2 HG2
HD HD
HNE1 HNE1
HNE2 HNE2
H5'1 H5'1
H5'2 H5'2
H4' H4'
H3' H3'
HO3' HO3'
H2' H2'
HO2' HO2'
H1' H1'
H8 H8
HN61 HN61
HN62 HN62
H2 H2