Atom Nomenclature for NPL

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 NPL

Atom Name (V3) Atom Name (V2)
N1 N1
C1 C1
C2 C2
C2A C2A
C3 C3
O3 O3
C4 C4
C4A C4A
N4 N4
C5 C5
C5A C5A
O4P O4P
P P
O1P O1P
O2P O2P
O3P O3P
C6 C6
H11 1H1
H12 2H1
H13 3H1
H21 1H2
H22 2H2
H23 3H2
HO3 HO3
H41 1H4
H42 2H4
HN41 1HN4
HN42 2HN4
H51 1H5
H52 2H5
HOP2 2HOP
HOP3 3HOP
H6 H6