Atom Nomenclature for LCG

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 LCG

Atom Name (V3) Atom Name (V2)
P P
OP1 O1P
O5' O5*
C5' C5*
C3' C3*
C6' C6*
N9 N9
C8 C8
C4 C4
N7 N7
C5 C5
C6 C6
C2' C2*
O6 O6
C4' C4*
C1' C1*
C2 C2
N1 N1
O4' O4*
OP2 O2P
N2 N2
N3 N3
O2' O2*
O3' O3*
OP3 O3P
H5' 1H5*
H5'' 2H5*
H3' H3*
H6'1 1H6*
H6'2 2H6*
H8 H8
H2' 1H2*
H1' H1*
H1 H1
HOP2 2HOP
H21 1H2
H22 2H2
HO3' H3T
HOP3 3HOP