Magnetoreception of Photoactivated Cryptochrome 1 in Electrochemistry and Electron Transfer.

ABSTRACT: 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^•- is responsible for the detected electrochemical Faradaic current. As a photoreceptor, the finding of a 5.7% rate constant

SUBMITTER: Zeng Z 

PROVIDER: S-EPMC6641772 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature