Atom Nomenclature for XYP

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 XYP

Atom Name (V3) Atom Name (V2)
O1 O4A
C1 C1B
C2 C2B
C3 C3B
C4 C4B
C5 C5B
O2 O2B
O3 O3B
O4 O4B
O5 O5B
HO1 HO4A
H1 H1B
H2 H2B
H3 H3B
H4 H4B
H51 H5B1
H52 H5B2
HO2 HO2B
HO3 HO3B
HO4 HO4B