Vibrational Spectroscopy of Phytochromes

P Hildebrandt - Biomolecules, 2023 - mdpi.com
Phytochromes are biological photoswitches that translate light into physiological functions.
Spectroscopic techniques are essential tools for molecular research into these …

[HTML][HTML] Ground-state heterogeneity and vibrational energy redistribution in bacterial phytochrome observed with femtosecond 2D IR spectroscopy

M Chenchiliyan, J Kübel, SA Ooi, G Salvadori… - The Journal of …, 2023 - pubs.aip.org
Phytochromes belong to a group of photoreceptor proteins containing a covalently bound
biliverdin chromophore that inter-converts between two isomeric forms upon photoexcitation …

Blue protein with red fluorescence

S Ghosh, CL Yu, DJ Ferraro, S Sudha… - Proceedings of the …, 2016 - National Acad Sciences
The walleye (Sander vitreus) is a golden yellow fish that inhabits the Northern American
lakes. The recent sightings of the blue walleye and the correlation of its sighting to possible …

The interplay between chromophore and protein determines the extended excited state dynamics in a single-domain phytochrome

C Slavov, T Fischer, A Barnoy, H Shin… - Proceedings of the …, 2020 - National Acad Sciences
Phytochromes are a diverse family of bilin-binding photoreceptors that regulate a wide
range of physiological processes. Their photochemical properties make them attractive for …

Coordination of the biliverdin D-ring in bacteriophytochromes

N Lenngren, P Edlund, H Takala… - Physical Chemistry …, 2018 - pubs.rsc.org
Phytochrome proteins translate light into biochemical signals in plants, fungi and
microorganisms. Light cues are absorbed by a bilin chromophore, leading to an …

The origin of ultrafast multiphasic dynamics in photoisomerization of bacteriophytochrome

D Wang, Y Qin, M Zhang, X Li, L Wang… - The journal of …, 2020 - ACS Publications
Red-light bacteriophytochromes regulate many physiological functions through
photoisomerization of a linear tetrapyrrole chromophore. In this work, we mapped out …

Intramolecular proton transfer controls protein structural changes in phytochrome

A Kraskov, AD Nguyen, J Goerling, D Buhrke… - Biochemistry, 2020 - ACS Publications
Phytochromes are biological photoswitches that interconvert between two parent states (Pr
and Pfr). The transformation is initiated by photoisomerization of the tetrapyrrole …

Ultrafast protein response in the Pfr state of Cph1 phytochrome

Y Yang, T Stensitzki, C Lang, J Hughes… - Photochemical & …, 2023 - Springer
Photoisomerization is a fundamental process in several classes of photoreceptors.
Phytochromes sense red and far-red light in their Pr and Pfr states, respectively. Upon light …

[HTML][HTML] Active and silent chromophore isoforms for phytochrome Pr photoisomerization: An alternative evolutionary strategy to optimize photoreaction quantum yields

Y Yang, M Linke, T von Haimberger, R Matute… - Structural …, 2014 - pubs.aip.org
Photoisomerization of a protein bound chromophore is the basis of light sensing of many
photoreceptors. We tracked Z-to-E photoisomerization of Cph1 phytochrome chromophore …

Conformational heterogeneity of the Pfr chromophore in plant and cyanobacterial phytochromes

F Velazquez Escobar, D Von Stetten… - Frontiers in Molecular …, 2015 - frontiersin.org
Phytochromes are biological photoreceptors that can be reversibly photoconverted between
a dark and photoactivated state. The underlying reaction sequences are initiated by the …