Atom Nomenclature for IMF

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 IMF

Atom Name (V3) Atom Name (V2)
CU CU
O1 O1
O2 O2
CG1 CG1
CDC C1D2
NDB N1D1
CEB C1E1
NEC N1E2
CG2 CG2
CDM C2D2
NDL N2D1
CEL C2E1
NEM N2E2
CG3 CG3
CDW C3D2
NDV N3D1
CEV C3E1
NEW N3E2
CG4 CG4
CD6 C4D2
ND5 N4D1
CE5 C4E1
NE6 N4E2
HO11 HO11
HO12 HO12
HO21 HO21
HO22 HO22
HG1 HG1
HD21 HD21
HD11 HD11
H1E2 H1E2
HG2 HG2
HD22 HD22
HD12 HD12
H2E1 H2E1
HG3 HG3
HD23 HD23
HD13 HD13
HG4 HG4
HD24 HD24
HD14 HD14
H4E1 H4E1
HC1 HC1