Magnetoreception of Photoactivated Cryptochrome 1 in Electrochemistry and Electron Transfer Zheng Zeng Jianjun Wei Yiyang Liu Wendi Zhang Taylor Mabe 10.1021/acsomega.8b00645.s001 https://acs.figshare.com/articles/journal_contribution/Magnetoreception_of_Photoactivated_Cryptochrome_1_in_Electrochemistry_and_Electron_Transfer/6205139 Cryptochromes are flavoproteins whose photochemistry is important for crucial functions associated with phototropism and circadian clocks. In this report, we, for the first time, observed a magnetic response of the cryptochrome 1 (CRY1) immobilized at a gold electrode with illumination of blue light. These results present the magnetic field-enhanced photoinduced electron transfer of CRY1 to the electrode by voltammetry, exhibiting magnetic responsive rate constant and electrical current changes. A mechanism of the electron transfer, which involves photoinduced radicals in the CRY, is sensitive to the weak magnetic field; and the long-lived free radical FAD<sup>•–</sup> is responsible for the detected electrochemical Faradaic current. As a photoreceptor, the finding of a 5.7% rate constant change in electron transfer corresponding to a 50 μT magnetic field may be meaningful in regulation of magnetic field signaling and circadian clock function under an electromagnetic field. 2018-05-01 12:50:42 circadian clock function electrode field-enhanced photoinduced electron transfer Photoactivated Cryptochrome 1 50 μ T FAD electron transfer Electron Transfer Cryptochromes