at Google ScholarTitle data
Engelhard, Christopher ; Diensthuber, Ralph P. ; Möglich, Andreas ; Bittl, Robert:
Blue-light reception through quaternary transitions.
In: Scientific Reports.
Vol. 7
(2017)
.
- 1385.
ISSN 2045-2322
DOI: https://doi.org/10.1038/s41598-017-01497-7
Abstract in another language
Sensory photoreceptors absorb light via their photosensor modules and trigger downstream physiological adaptations via their effector modules. Light reception accordingly depends on precisely orchestrated interactions between these modules, the molecular details of which often remain elusive. Using electron-electron double resonance (ELDOR) spectroscopy and site-directed spin labelling, we chart the structural transitions facilitating blue-light reception in the engineered light-oxygen-voltage (LOV) histidine kinase YF1 which represents a paradigm for numerous natural signal receptors. Structural modelling based on pair-wise distance constraints derived from ELDOR pinpoint light-induced rotation and splaying apart of the two LOV photosensors in the dimeric photoreceptor. Resultant molecular strain likely relaxes as left-handed supercoiling of the coiled-coil linker connecting sensor and effector units. ELDOR data on a photoreceptor variant with an inverted signal response indicate a drastically altered dimer interface but light-induced structural transitions in the linker that are similar to those in YF1. Taken together, we provide mechanistic insight into the signal trajectories of LOV photoreceptors and histidine kinases that inform molecular simulations and the engineering of novel receptors.
Further data
| Item Type: | Article in a journal |
|---|---|
| Refereed: | Yes |
| Institutions of the University: | Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Biochemistry II - Photobiochemistry > Chair Biochemistry II - Photobiochemistry - Univ.-Prof. Dr. Andreas Möglich Faculties Faculties > Faculty of Biology, Chemistry and Earth Sciences Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Biochemistry I - Proteinbiochemie der Signaltransduktion Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Biochemistry II - Photobiochemistry |
| Result of work at the UBT: | Yes |
| DDC Subjects: | 500 Science > 570 Life sciences, biology |
| Date Deposited: | 04 May 2017 09:03 |
| Last Modified: | 10 Jun 2024 11:03 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/36940 |