Atom Nomenclature for OPA

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 OPA

Atom Name (V3) Atom Name (V2)
O1 O1
C2 C2
C3 C3
C4 C4
C5 C5
C6 C6
S13 S13
C14 C14
C15 C15
C16 C16
O17 O17
O18 O18
N19 N19
C20 C20
C21 C21
O22 O22
O23 O23
O24 O24
H21 1H2
H22A 2H2
H51 1H5
H52 2H5
H61 1H6
H62 2H6
H17 H17
H19 H19
H22 H22