Atom Nomenclature for U05

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 U05

Atom Name (V3) Atom Name (V2)
N1 N1
C2 C2
C3 C3
C4 C4
C4A C4A
C5 C5
O13 O13
N6 N6
C12 C12
C6A C6A
C7 C7
C8 C8
C9 C9
N N
O1 O1
O2 O2
C10 C10
C11 C11
N11 N11
C14 C14
C15 C15
C1A C1A
H2 H2
H3 H3
H4 H4
H121 1H12
H122 2H12
H123 3H12
H7 H7
H8 H8
H10 H10
H141 1H14
H142 2H14
H151 1H15
H152 2H15
H153 3H15