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Photochemistry and Signaling Activity of Plant Cryptochromes: A Review.
- Source :
-
Biology Bulletin . Jun2023, Vol. 50 Issue 3, p266-275. 10p. - Publication Year :
- 2023
-
Abstract
- Cryptochromes constitute an extensive class of blue-light sensory receptors that regulate the processes of development and circadian rhythm in plants. These photoreceptors can also act as magnetoreceptors. As a chromophore, cryptochromes bind the flavin adenine dinucleotide (FAD) in the photolyase homology region (PHR) domain; near the FAD-binding site, a C-terminal extension CCE is attached to it. The cryptochrome activation is initiated by FAD photoreactions with electron/proton transfer and formation of redox forms. During FAD photoreduction, the protein is exposed to a conformational change causing a separation of the PHR domain and CCE, which is accompanied by the formation of functionally active oligomers of cryptochrome molecules. Photooligomerization is considered as a key process required for a signaling activity of cryptochromes. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10623590
- Volume :
- 50
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Biology Bulletin
- Publication Type :
- Academic Journal
- Accession number :
- 164107478
- Full Text :
- https://doi.org/10.1134/S1062359022700157