Atom Nomenclature for JAR

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 JAR

Atom Name (V3) Atom Name (V2)
C1 C1
C2 C2
C3 C3
N4 N4
N5 N5
C6 C6
C7 C7
C8 C8
O9 O9
N10 N10
C11 C11
N12 N12
C13 C13
C14 C14
C16 C16
N17 N17
C18 C18
C19 C19
C20 C20
C21 C21
C22 C22
C23 C23
C24 C24
C25 C25
C26 C26
C28 C28
H1 H1
H1A H1A
H1B H1B
H2 H2
H3 H3
H3A H3A
H3B H3B
H6 H6
HN10 HN10
H14 H14
H16 H16
H16A H16A
H18 H18
H18A H18A
H20 H20
H21 H21
H22 H22
H23 H23
H24 H24
H25 H25
H25A H25A
H26 H26
H28 H28
H28A H28A
H28B H28B