Atom Nomenclature for CKB

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 CKB

Atom Name (V3) Atom Name (V2)
C2A C2
C4A C4
C5A C5
C6A C6
C7 C7
N1 N1
N3 N3
C1 C1'
C2 C2'
C3 C3'
C4 C4'
C5 C5'
C6 C6'
O6 O6'
O2 O2'
O3 O3'
O4 O4'
O5 O5'
O2A O2
O4A O4
H6 H6
H7 H7
H7A H7A
H7B H7B
HN3 HN3
H1 H1'
H2 H2'
H3 H3'
H4 H4'
H5 H5'
H61 H6'
H62 H6'A
HO6 HO6'
HO2 HO2'
HO3 HO3'
HO4 HO4'