Atom Nomenclature for RIL

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 RIL

Atom Name (V3) Atom Name (V2)
C1 C1
C2 C2
C5 C5
C7 C7
C10 C10
C13 C13
P16 P16
O20 O20
O21 O21
C23 C23
C24 C24
C27 C27
O28 O28
C30 C30
O31 O31
C34 C34
C38 C38
O1 O1
H11 1H1
H12 2H1
H2 H2
H51 1H5
H52 2H5
H71 1H7
H72 2H7
H101 1H10
H102 2H10
H131 1H13
H132 2H13
H231 1H23
H232 2H23
H24 H24
H271 1H27
H272 2H27
H341 1H34
H342 2H34
H343 3H34
H381 1H38
H382 2H38
H383 3H38
HO1 HO1