Encapsulation of a Biomolecule in a Hollow of a Self-Assembled Metal-Organic Complex

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An artificial, well-defined spherical molecules were self-assembled from 72 building blocks with the diameter of several nanometers. The number of components, 72, was the world largest number, and the huge molecular structure was clearly determined. The complex was very stable because of the large number of components, and we succeeded to link biomolecules to the spherical skeleton. The large size of the self-assembled spheres is very original and attractive : (1) an encapsulation of one protein inside the sphere, (2) decollation of peptide chains, and (3) surface modification with DNA were achieved to show functions due to their characteristic molecular structures.