Atom Nomenclature for 3NG

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 3NG

Atom Name (V3) Atom Name (V2)
C1 C1
C2 C2
C3 C3
C4 C4
C5 C5
C6 C6
C7 C7
C8 C8
N9 N9
C10 C10
C11 C11
N12 N12
C13 C13
C14 C14
N15 N15
C16 C16
C17 C17
C18 C18
C19 C19
C20 C20
C21 C21
CL22 CL22
C23 C23
O24 O24
O25 O25
H3 H3
H4 H4
H6 H6
H11 H11
H13 H13
H14 H14
HN15 HN15
H17 H17
H19 H19
H20 H20
H21 H21
HO25 HO25