Plant Cryptochromes Illuminated: A Spectroscopic Perspective on the Mechanism

Plant cryptochromes are central blue light receptors for the control of land plant and algal development including the circadian clock and the cell cycle. Cryptochromes share a photolyase homology region with about 500 amino acids and bind the chromophore flavin adenine dinucleotide. Characteristic...

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Autores principales:	Lukas Goett-Zink, Tilman Kottke
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	photoreceptor photolyase in-cell spectroscopy flavin UV-vis spectroscopy EPR (electron paramagnetic resonance) Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/b3667c3122204c2ea533368054f48814
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spelling	oai:doaj.org-article:b3667c3122204c2ea533368054f488142021-11-30T19:47:15ZPlant Cryptochromes Illuminated: A Spectroscopic Perspective on the Mechanism2296-264610.3389/fchem.2021.780199https://doaj.org/article/b3667c3122204c2ea533368054f488142021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fchem.2021.780199/fullhttps://doaj.org/toc/2296-2646Plant cryptochromes are central blue light receptors for the control of land plant and algal development including the circadian clock and the cell cycle. Cryptochromes share a photolyase homology region with about 500 amino acids and bind the chromophore flavin adenine dinucleotide. Characteristic for plant cryptochromes is a conserved aspartic acid close to flavin and an exceptionally long C-terminal extension. The mechanism of activation by excitation and reduction of the chromophore flavin adenine dinucleotide has been controversially discussed for many years. Various spectroscopic techniques have contributed to our understanding of plant cryptochromes by providing high time resolution, ambient conditions and even in-cell approaches. As a result, unifying and differing aspects of photoreaction and signal propagation have been revealed in comparison to members from other cryptochrome subfamilies. Here, we review the insight from spectroscopy on the flavin photoreaction in plant cryptochromes and present the current models on the signal propagation from flavin reduction to dissociation of the C-terminal extension.Lukas Goett-ZinkTilman KottkeTilman KottkeFrontiers Media S.A.articlephotoreceptorphotolyasein-cell spectroscopyflavinUV-vis spectroscopyEPR (electron paramagnetic resonance)ChemistryQD1-999ENFrontiers in Chemistry, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	photoreceptor photolyase in-cell spectroscopy flavin UV-vis spectroscopy EPR (electron paramagnetic resonance) Chemistry QD1-999
spellingShingle	photoreceptor photolyase in-cell spectroscopy flavin UV-vis spectroscopy EPR (electron paramagnetic resonance) Chemistry QD1-999 Lukas Goett-Zink Tilman Kottke Tilman Kottke Plant Cryptochromes Illuminated: A Spectroscopic Perspective on the Mechanism
description	Plant cryptochromes are central blue light receptors for the control of land plant and algal development including the circadian clock and the cell cycle. Cryptochromes share a photolyase homology region with about 500 amino acids and bind the chromophore flavin adenine dinucleotide. Characteristic for plant cryptochromes is a conserved aspartic acid close to flavin and an exceptionally long C-terminal extension. The mechanism of activation by excitation and reduction of the chromophore flavin adenine dinucleotide has been controversially discussed for many years. Various spectroscopic techniques have contributed to our understanding of plant cryptochromes by providing high time resolution, ambient conditions and even in-cell approaches. As a result, unifying and differing aspects of photoreaction and signal propagation have been revealed in comparison to members from other cryptochrome subfamilies. Here, we review the insight from spectroscopy on the flavin photoreaction in plant cryptochromes and present the current models on the signal propagation from flavin reduction to dissociation of the C-terminal extension.
format	article
author	Lukas Goett-Zink Tilman Kottke Tilman Kottke
author_facet	Lukas Goett-Zink Tilman Kottke Tilman Kottke
author_sort	Lukas Goett-Zink
title	Plant Cryptochromes Illuminated: A Spectroscopic Perspective on the Mechanism
title_short	Plant Cryptochromes Illuminated: A Spectroscopic Perspective on the Mechanism
title_full	Plant Cryptochromes Illuminated: A Spectroscopic Perspective on the Mechanism
title_fullStr	Plant Cryptochromes Illuminated: A Spectroscopic Perspective on the Mechanism
title_full_unstemmed	Plant Cryptochromes Illuminated: A Spectroscopic Perspective on the Mechanism
title_sort	plant cryptochromes illuminated: a spectroscopic perspective on the mechanism
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/b3667c3122204c2ea533368054f48814
work_keys_str_mv	AT lukasgoettzink plantcryptochromesilluminatedaspectroscopicperspectiveonthemechanism AT tilmankottke plantcryptochromesilluminatedaspectroscopicperspectiveonthemechanism AT tilmankottke plantcryptochromesilluminatedaspectroscopicperspectiveonthemechanism
_version_	1718406285418823680

Plant Cryptochromes Illuminated: A Spectroscopic Perspective on the Mechanism

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