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RESEARCH INTERESTS

EPR spectroscopy, X-ray spectroscopy, Photosystem II

ABOUT/BIOGRAPHY

Maria Chrysina studied Biology at the University of Athens and went on to pursue postgraduate studies in Bioinorganic Chemistry. During her PhD at the National Centre for Scientific Research “Demokritos,” she investigated Photosystem II using Electron Paramagnetic Resonance (EPR) spectroscopy. She then carried out postdoctoral research at the Max Planck Institute for Chemical Energy Conversion (MPI CEC). Her research focuses on the characterisation of intermediates in the photosynthetic water-splitting reaction, using advanced spectroscopic techniques, including continuous-wave and pulsed EPR, as well as synchrotron-based X-ray spectroscopy. Her work is supported within the framework of the “Max Planck Partner Group” and “Hellenic Foundation for Research and Innovation (HFRI) postdoctoral research” programs.

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PUBLICATIONS

Chrysina, M., Zahariou, G., Ioannidis, N., Sanakis, Y. and Mitrikas, G., Electronic structure of tyrosyl D radical of photosystem II, as revealed by 2D-hyperfine sublevel correlation spectroscopy Magnetochemistry, Volume 7, Article Number: 131, 2021 [doi]

Stamos, N.-A., Ferentinos, E., Chrysina, M., Raptopoulou, C.P., Psycharis, V., Sanakis, Y., Pantazis, D.A., Kyritsis, P. and Mitrikas, G., Unusual 31P Hyperfine Strain Effects in a Conformationally Flexible Cu(II) Complex Revealed by Two-Dimensional Pulse EPR Spectroscopy Inorganic Chemistry, Volume 59, Pages: 3666-3676, 2020 [doi]

Stamos, Nikolaos-Angelos, Ferentinos, Eleftherios, Chrysina, Maria, Raptopoulou, Catherine P., Psycharis, Vassilis, Sanakis, Yiannis, Pantazis, Dimitrios A., Kyritsis, Panayotis and Mitrikas, George, Unusual P-31 Hyperfine Strain Effects in a Conformationally Flexible Cu(II) Complex Revealed by Two-Dimensional Pulse EPR Spectroscopy INORGANIC CHEMISTRY, Volume 59, Pages: 3666-3676, 2020 [doi]

Lubitz, W., Chrysina, M. and Cox, N., Water oxidation in photosystem II Photosynthesis Research, Volume 142, Pages: 105-125, 2019 [doi]

Chrysina, M., Heyno, E., Kutin, Y., Reus, M., Nilsson, H., Nowaczyk, M.M., DeBeer, S., Neese, F., Messinger, J., Lubitz, W. and Cox, N., Five-coordinate MnIV intermediate in the activation of nature’s water splitting cofactor Proceedings of the National Academy of Sciences of the United States of America, Volume 116, Pages: 16841-16846, 2019 [doi]

Chrysina, M., De Mendonça Silva, J.C., Zahariou, G., Pantazis, D.A. and Ioannidis, N., Proton Translocation via Tautomerization of Asn298 during the S 2 -S 3 State Transition in the Oxygen-Evolving Complex of Photosystem II Journal of Physical Chemistry B, Volume 123, Pages: 3068-3078, 2019 [doi]

Morton, J., Chrysina, M., Craig, V.S.J., Akita, F., Nakajima, Y., Lubitz, W., Cox, N., Shen, J.-R. and Krausz, E., Structured near-infrared Magnetic Circular Dichroism spectra of the Mn4CaO5 cluster of PSII in T. vulcanus are dominated by Mn(IV) d-d ‘spin-flip’ transitions Biochimica et Biophysica Acta - Bioenergetics, Volume 1859, Pages: 88-98, 2018 [doi]

Zahariou, G., Chrysina, M., Petrouleas, V. and Ioannidis, N., Can we trap the S 3 y Z metalloradical intermediate during the S-state transitions of Photosystem II? An EPR investigation FEBS Letters, Volume 588, Pages: 1827-1831, 2014 [doi]

Chrysina, M., Zahariou, G., Sanakis, Y., Ioannidis, N. and Petrouleas, V., Conformational changes of the S2YZ intermediate of the S 2 to S3 transition in photosystem II Journal of Photochemistry and Photobiology B: Biology, Volume 104, Pages: 72-79, 2011 [doi]

Chrysina, M., Zahariou, G., Ioannidis, N. and Petrouleas, V., Conversion of the g=4.1 EPR signal to the multiline conformation during the S2 to S3 transition of the oxygen evolving complex of Photosystem II Biochimica et Biophysica Acta - Bioenergetics, Volume 1797, Pages: 487-493, 2010 [doi]

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