Atom Nomenclature for MCU

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 MCU

Atom Name (V3) Atom Name (V2)
C4A C4A
O4 O4
C4 C4
C3 C3
O3 O3
C2 C2
O2 O2
C1 C1
O1 O1
O5 O5
C5 C5
C6 C6
O6A O6
O6B O6A
C6A C6A
H1A H1
H2A H2
H3A H3
H4 H4
H3 H5
HO3 H6
H2 H7
HO2 H8
H1 H9
HO1 H10
H5 H11
H12 H12
H13 H13
H14 H14