Atom Nomenclature for OOO

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 OOO

Atom Name (V3) Atom Name (V2)
O1 O1
C3 C1
C4 C2
N5 N1
C6 C3
N7 N2
N8 N3
C9 C4
C10 C5
N11 N4
C12 C6
C13 C7
C14 C8
C15 C9
C16 C10
C17 C11
C18 C12
C19 C13
C20 C14
C21 C15
C22 C16
C23 C17
O24 O2
N25 N5
C26 C18
C27 C19
C28 C20
C29 C21
C30 C22
C31 C23
C32 C24
C33 C25
C34 C26
C35 C27
C36 C28
C37 C29
O38 O3
C39 C30
C40 C31
C2 C32
H1 H1
H2 H2
H3 H3
H4 H4
H5 H5
H6 H6
H7 H7
H8 H8
H9 H9
H10 H10
H11 H11
H12 H12
H13 H13
H14 H14
H15 H15
H16 H16
H17 H17
H18 H18
H19 H19
H21 H21
H22 H22
H23 H23
H24 H24
H25 H25
H26 H26
H27 H27
H28 H28
H29 H29
H30 H30
H31 H31
H32 H32
H33 H33
H34 H34
H35 H35
H36 H36
H37 H37
H38 H38
H39 H39
H40 H40