Results 41 to 50 of about 14,383 (270)

Eumetazoan Cryptochrome Phylogeny and Evolution [PDF]

Genome Biology and Evolution, 2015
Cryptochromes (Crys) are light sensing receptors that are present in all eukaryotes. They mainly absorb light in the UV/blue spectrum. The extant Crys consist of two subfamilies, which are descendants of photolyases but are now involved in the regulation of circadian rhythms. So far, knowledge about the evolution, phylogeny, and expression of cry genes
Haug, Marion F, Gesemann, Matthias, Lazović, Viktor, Neuhauss, Stephan C F   +3 more
openaire   +2 more sources

Stop CRYing! Inhibition of cryptochrome function by small proteins

Biochemical Society Transactions, 2022
Plants can detect the presence of light using specialised photoreceptor proteins. These photoreceptors measure the intensity of light, but they can also respond to different spectra of light and thus ‘see' different colours. Cryptochromes, which are also
V. Kruusvee, Arendse Maria Toft, Blanche Aguida, Margaret Ahmad, Stephan Wenkel   +4 more
semanticscholar   +1 more source

Monte-Carlo wavefunction approach for the spin dynamics of recombining radicals

New Journal of Physics, 2020
We adapt the Monte-Carlo wavefunction (MCWF) approach to treat the open-system spin dynamics of radical pairs subject to spin-selective recombination reactions.
Robert H Keens, Daniel R Kattnig
doaj   +1 more source

Antibodies Against the Clock Proteins Period and Cryptochrome Reveal the Neuronal Organization of the Circadian Clock in the Pea Aphid

Frontiers in Physiology, 2021
Circadian clocks prepare the organism to cyclic environmental changes in light, temperature, or food availability. Here, we characterized the master clock in the brain of a strongly photoperiodic insect, the aphid Acyrthosiphon pisum ...
Francesca Sara Colizzi, Katharina Beer, Paolo Cuti, Peter Deppisch, David Martínez Torres, Taishi Yoshii, Charlotte Helfrich-Förster   +6 more
doaj   +1 more source

Tuning flavin environment to detect and control light-induced conformational switching in Drosophila cryptochrome

Communications Biology, 2021
Light-induction of an anionic semiquinone (SQ) flavin radical in Drosophila cryptochrome (dCRY) alters the dCRY conformation to promote binding and degradation of the circadian clock protein Timeless (TIM).
Siddarth Chandrasekaran, C. M. Schneps, Robert Dunleavy, Changfan Lin, C. DeOliveira, Abir Ganguly, B. Crane   +6 more
semanticscholar   +1 more source

Cryptochrome-mediated blue-light signalling modulates UVR8 photoreceptor activity and contributes to UV-B tolerance in Arabidopsis

Nature Communications, 2020
UV-B constitutes a critical part of the sunlight reaching the earth surface. The homodimeric plant UV-B photoreceptor UV RESISTANCE LOCUS 8 (UVR8) monomerizes in response to UV-B and induces photomorphogenic responses, including UV-B acclimation and ...
N. Tissot, R. Ulm
semanticscholar   +1 more source

Cryptochrome, Phytochrome, and Anthocyanin Production [PDF]

Plant Physiology, 1991
Anthocyanin production in cabbage (Brassica oleracea L.) and tomato (Lycopersicon esculentum Mill.) seedlings exposed to prolonged irradiations was studied under conditions that allowed discrimination, within certain limits, between the contribution of cryptochrome and phytochrome in the photoregulation of the response. The results of the study provide
Mancinelli A. L., Rossi F., Moroni A.
openaire   +3 more sources

Cryptochrome 1a localisation in light- and dark-adapted retinae of several migratory and non-migratory bird species: no signs of light-dependent activation

, 2021
The magnetic compass of birds seems to be based on light-dependent radical-pair processes in the eyes. Cryptochromes are currently the only candidate proteins known in vertebrates that may serve as the primary radical-pair-based magnetoreceptor molecules.
Petra Bolte, Angelika Einwich, P. Seth, Raisa Chetverikova, D. Heyers, Irina Wojahn, U. Janssen-Bienhold, R. Feederle, P. Hore, Karin Dedek, H. Mouritsen   +10 more
semanticscholar   +1 more source

Exploring Post-activation Conformational Changes in Pigeon Cryptochrome 4.

Journal of Physical Chemistry B, 2021
A widespread hypothesis ascribes the ability of migratory birds to navigate over large distances to an inclination compass realized by the protein cryptochrome in the birds' retinae. Cryptochromes are activated by blue light, which induces a radical pair
Fabian Schuhmann, D. Kattnig, I. Solov’yov   +2 more
semanticscholar   +1 more source

Action Spectrum of Drosophila Cryptochrome [PDF]

Journal of Biological Chemistry, 2007
Cryptochromes are a highly conserved class of UV-A/blue light photoreceptors. In Drosophila, cryptochrome is required for the normal entrainment of circadian rhythms to light dark cycles. The photocycle and molecular mechanism of animal cryptochrome photoreception are presently unknown. Drosophila cryptochrome undergoes light-dependent degradation when
Sarah J, VanVickle-Chavez, Russell N, Van Gelder   +1 more
openaire   +2 more sources