Atom Nomenclature for MBD

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 MBD

Atom Name (V3) Atom Name (V2)
CA1 CA1
OA1 OA1
CA2 CA2
OA2 OA2
CA3 CA3
CB3 CB3
CA4 CA4
CA5 CA5
CA6 CA6
HA1 HA1
HA2 HA2
HB31 1HB3
HB32 2HB3
HB33 3HB3
HA4 HA4
HA5 HA5
HA6 HA6