Atom Nomenclature for 201

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 201

Atom Name (V3) Atom Name (V2)
C4 C4
C2 C2
C3 C3
C1 C1
C7 C7
C6 C6
C23 C23
C8 C8
C12 C12
C16 C16
C13 C13
C9 C9
C17 C17
C19 C19
C22 C22
C21 C21
C20 C20
C18 C18
C5 C5
C11 C11
O3 O3
N1 N1
O1 O1
O2 O2
H2 H2
H1 H1
H6 H6
H8 H8
H12 H12
H13 H13
H9 H9
H19 H19
H22 H22
H21 H21
H20 H20
H18 H18
HN11 1HN1
HN12 2HN1
HO1 HO1