Atom Nomenclature for MRI

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 MRI

Atom Name (V3) Atom Name (V2)
OAB O1
CAM C1
CAN C2
OAD O2
CAI C3
CAO C4
OAC O3
CAS C5
CAR C6
OAF O4
CAP C7
CAJ C8
OAA O5
CAK C9
CAL C10
CAT C11
CAV C12
CAW C13
OAG O6
CAU C14
CAQ C15
OAE O7
H1 H1
H2 H2
H3 H3
H4 H4
H5 H5
H6 H6
H7 H7
H8 H8
H9 H9
H10 H10