Atom Nomenclature for ESL

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 ESL

Atom Name (V3) Atom Name (V2)
C2 C2
C3 C3
C4 C4
C5 C5
C6 C6
C7 C7
O1 O1
C8 C8
O2 O2
C9 C9
C10 C10
C12 C12
C14 C14
C15 C15
C16 C16
C17 C17
C18 C18
O3 O3
C19 C19
C20 C20
C21 C21
H2 H2
H31 1H3
H32 2H3
H41 1H4
H42 2H4
H61 1H6
H62 2H6
H63 3H6
H7 H7
HO1 HO1
H8 H8
HO2 HO2
H91 1H9
H92 2H9
H10 H10
H12 H12
H141 1H14
H142 2H14
H151 1H15
H152 2H15
H17 H17
HO3 HO3
H19 H19
H20 H20