Atom Nomenclature for 253

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 253

Atom Name (V3) Atom Name (V2)
C1 C1
O2 O2
C3 C3
C23 C23
O24 O24
C25 C25
C22 C22
C21 C21
C11 C11
C12 C12
C19 C19
N20 N20
C17 C17
C18 C18
C15 C15
N16 N16
C14 C14
C13 C13
C8 C8
C9 C9
N1 N1
C7 C7
N6 N6
C5 C5
C4 C4
H11 1H1
H12 2H1
H13A 3H1
H251 1H25
H252 2H25
H253 3H25
H22 H22
H181 1H18
H182 2H18
H183 3H18
H161 1H16
H162 2H16
H14 H14
H13 H13
HN11 1HN1
HN12 2HN1
H7 H7
H4 H4