Atom Nomenclature for B39

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 B39

Atom Name (V3) Atom Name (V2)
C4 C4
C5 C5
C6 C6
C8 C8
C10 C10
C13 C13
C15 C15
C17 C17
C20 C20
C21 C21
C22 C22
C24 C24
C26 C26
C19 C19
C23 C23
C25 C25
C1 C1
N18 N18
N16 N16
N14 N14
C12 C12
C11 C11
N7 N7
C3 C3
C2 C2
O9 O9
O27 O27
S28 S28
O29 O29
O30 O30
N31 N31
H4 H4
H5 H5
H5A H5A
H6 H6
H8 H8
H8A H8A
H10 H10
H15 H15
H20 H20
H20A H20A
H24 H24
H26 H26
H19 H19
H19A H19A
H23 H23
H25 H25
H1 H1
HN18 HN18
H11 H11
H3 H3
H3A H3A
H2 H2
HO9 HO9
HN31 HN31
HN3A HN3A