Atom Nomenclature for SMD

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 SMD

Atom Name (V3) Atom Name (V2)
S22 S22
C22 C22
C21 C21
O21 O21
C27 C27
O25 O25
C23 C23
O23 O23
C24 C24
O24 O24
C25 C25
C26 C26
O26 O26
C11 C11
C12 C12
C13 C13
C14 C14
C15 C15
C16 C16
O12 O12
O13 O13
O14 O14
O15 O15
O16 O16
H22 H22
H21 H21
H271 1H27
H272 2H27
H273 3H27
H23 H23
H2 H2
H24 H24
H1 H1
H25 H25
H261 1H26
H262 2H26
H26 H26
H11 H11
H12 H12
H13 H13
H14 H14
H15 H15
H161 1H16
H162 2H16
H5 H5
H4 H4
H3 H3
H16 H16