Atom Nomenclature for DRF

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 DRF

Atom Name (V3) Atom Name (V2)
O45 O45
C44 C44
O55 O55
C41 C41
O46 O46
C48 C48
C49 C49
C40 C40
C33 C33
C34 C34
C35 C35
C30 C30
O27 O27
C24 C24
C23 C23
N22 N22
C11 C11
C16 C16
O21 O21
C4 C4
C3 C3
C2 C2
C1 C1
C6 C6
C5 C5
C15 C15
C14 C14
C13 C13
C12 C12
C31 C31
C32 C32
H45 H45
H41 H41
H481 1H48
H482 2H48
H491 1H49
H492 2H49
H493 3H49
H401 1H40
H402 2H40
H34 H34
H35 H35
H241 1H24
H242 2H24
H231 1H23
H232 2H23
H2 H2
H1 H1
H6 H6
H5 H5
H15 H15
H14 H14
H13 H13
H12 H12
H31 H31
H32 H32