Atom Nomenclature for AM6

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 AM6

Atom Name (V3) Atom Name (V2)
C9 C9
C10 C10
C11 C11
N3 N3
C7 C7
C14 C14
C15 C15
C19 C19
C18 C18
C17 C17
C16 C16
C20 C20
F1 F1
F3 F3
F2 F2
C12 C12
C13 C13
C21 C21
C22 C22
N1 N1
C23 C23
C24 C24
C25 C25
N4 N4
C26 C26
N6 N6
C8 C8
O2 O2
N7 N7
O1 O1
C27 C27
C28 C28
C29 C29
C30 C30
C31 C31
C5 C5
C32 C32
C1 C1
N2 N2
C3 C3
C4 C4
N5 N5
C6 C6
C2 C2
H9 H9
H10 H10
HN3 HN3
H15 H15
H19 H19
H18 H18
H12 H12
H22 H22
H22A H22A
H22B H22B
H23 H23
H25 H25
HN6 HN6
HN7 HN7
H27 H27
H27A H27A
H27B H27B
H28 H28
H30 H30
H31 H31
H32 H32
H1 H1
H1A H1A
H3 H3
H3A H3A
H4 H4
H4A H4A
H6 H6
H6A H6A
H2 H2
H2A H2A
H2B H2B