Atom Nomenclature for N2P

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 N2P

Atom Name (V3) Atom Name (V2)
C1 C1
C2 C2
C3 C3
C4 C4
NE2 NE2
C5 C5
N1 N1
H1C1 1H1C
H1C2 2H1C
H2C1 1H2C
H2C2 2H2C
H3C1 1H3C
H3C2 2H3C
H4C1 1H4C
H4C2 2H4C
HE21 1HE2
HE22 2HE2
H5C1 1H5C
H5C2 2H5C
H1N1 1H1N
H1N2 2H1N