Atom Nomenclature for 52X

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 52X

Atom Name (V3) Atom Name (V2)
C1 C1
I1 I1
N1 N1
O1 O1
C2 C2
N2 N2
O2 O2
C3 C3
N3 N3
O3 O3
C4 C4
C5 C5
C6 C6
C7 C7
C8 C8
C11 C11
C12 C12
C14 C14
C15 C15
C18 C18
C33 C33
H2 H2
HN2 HN2
H3 H3
HN3 HN3
H5 H5
H11 H11
H11A H11A
H12 H12
H12A H12A
H15 H15
H15A H15A
H15B H15B
H33 H33
H33A H33A
H33B H33B
HN1 HN1