Atom Nomenclature for COQ

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 COQ

Atom Name (V3) Atom Name (V2)
C2B C2*
C4B C4*
C4A C4A
C5B C5*
C6B C6*
C7' C7*
C8A C8A
C9' C9*
C1' C1'
C2' C2'
C3' C3'
C4' C4'
C5' C5'
C6' C6'
C31 C31
C51 C51
CN' CN*
N1' N1*
N2' N2*
N3' N3*
N4' N4*
N8' N8*
N9' N9*
O3' O3'
O5' O5'
H5' H5*
H7' H7*
H9'1 1H9*
H9'2 2H9*
H2' H2'
H4' H4'
H6' H6'
H311 1H31
H312 2H31
H313 3H31
H511 1H51
H512 2H51
H513 3H51
HCN1 1HCN
HCN2 2HCN
HCN3 3HCN
HN21 1HN2
HN22 2HN2
HN41 1HN4
HN42 2HN4