Abstract
Effective artificial enzymes have been designed by adopting macromolecular systems for catalyst-substrate complexes. Artificial active sites comprising two or more organic functional groups were built on macromolecular backbones, leading to several types of organic artificial proteases. The activity of metal centers for peptide or DNA hydrolysis was greatly enhanced by attachment to polystyrene, leading to artificial metallopeptidases with substrate selectivity as well as artificial metallonucleases with high catalytic activity for double stranded DNA. A small artificial protease selective for a macromolecular target protein was synthesized. Target-specific artificial proteases can be used as protein-cleaving catalytic drugs.
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