Atom Nomenclature for NT

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 NT

Atom Name (V3) Atom Name (V2)
C1 C1
N1 N1
N2 N2
N3 N3
C2 C2
C3 C3
O1 O1
N4 N4
C4 C4
C5 C5
C6 C6
N5 N5
C8 C8
C7 C7
C9 C9
O2 O2
N6 N6
C10 C10
C11 C11
C12 C12
N7 N7
C14 C14
C13 C13
C15 C15
O3 O3
N8 N8
C16 C16
C17 C17
C18 C18
N9 N9
N10 N10
HN1 HN1
HN21 1HN2
HN22 2HN2
HN3 HN3
H21 1H2
H22 2H2
HN4 HN4
H5 H5
H81 1H8
H82 2H8
H83 3H8
H7 H7
HN6 HN6
H11 H11
H141 1H14
H142 2H14
H143 3H14
H13 H13
HN8 HN8
H161 1H16
H162 2H16
H171 1H17
H172 2H17
HN9 HN9
HN01 1HN0
HN02 2HN0