Magnetic nanoparticles can be used for nanomechanical control of biochemical properties of macromolecules via low-frequency non-heating magnetic field. It was shown [1] that super-low-frequency magnetic field (50Hz, 137,5 mTl) reduce the rate of enzyme activity of a-chymotrypsin, immobilized on copolymer-MNP aggregates, to 25%. We developed immobilized technique that achieves the less of enzyme activity to 55-60%. Also we studied the effect of AC magnetic field at different frequency and strength.
Reference:
1. Natalia L. Klyachko, Marina Sokolsky-Papkov, Nikorn Pothayee, Maria V. Efremova, Dmitry A. Gulin, Nipon Pothayee, Artem A. Kuznetsov, Alexander G. Majouga, Judy S. Riffle, Yuri I. Golovin, Alexander V. Kabanov. Angew. Chem. Int. Ed. 2012, 51, 12016 –12019