Effects of circularly-polarized electromagnetic fields on solvated hemoglobin structure
| Autor: | Mehrdad Saviz, Minoo Qafary, Siyavash Shabani, Reza Faraji-Dana, Ali Akbar Moosavi-Movahedi, Aghdas Banaei, Nastaran Hamedi |
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| Rok vydání: | 2020 |
| Předmět: |
Electromagnetic field
Quantitative Biology::Biomolecules Circular dichroism animal structures Materials science Linear polarization 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Polarization (waves) 01 natural sciences Molecular physics Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials Electric field Materials Chemistry Hemoglobin Physical and Theoretical Chemistry 0210 nano-technology Spectroscopy Macromolecule |
| Zdroj: | Journal of Molecular Liquids. 312:113283 |
| ISSN: | 0167-7322 |
| Popis: | This paper studies the effects of electromagnetic fields (EMF), specifically with circular electric field polarization, on the structure of Hemoglobin. Nearly all of the previous studies are based on linearly-polarized waves. But our comparative study based on a novel dual-polarized waveguide exposure device, shows that the EMF effects on macromolecules such as hemoglobin are polarization-dependent, and that circularly-polarized EMFs with the same incident power density can have significantly stronger effects on the structure of Hemoglobin. A novel dual-polarized exposure device is employed, followed by intrinsic fluorescence spectroscopy, UV–Vis spectroscopy, and far UV Circular Dichroism Spectroscopy, to show that the helical content is significantly reduced under circular as compared to linear polarization. This corresponds to a certain unwinding effect through the circularly-polarized EMF. The physical basis for the observed results is discussed together with implications for further research. |
| Databáze: | OpenAIRE |
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