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Ultrafast structural changes within a photosynthetic reaction centre
- Source :
- Nature, Nature, Nature Publishing Group, 2021, 589, pp.310-314, Nature
/ Physical science 589, 310-314 (2021). doi:10.1038/s41586-020-3000-7, Nature, 2021, 589, pp.310-314 - Publication Year :
- 2021
- Publisher :
- HAL CCSD, 2021.
-
Abstract
- Nature / Physical science 589, 310 - 314 (2021). doi:10.1038/s41586-020-3000-7<br />Photosynthetic reaction centres harvest the energy content of sunlight by transporting electrons across an energy-transducing biological membrane. Here we use time-resolved serial femtosecond crystallography1 using an X-ray free-electron laser2 to observe light-induced structural changes in the photosynthetic reaction centre of Blastochloris viridis on a timescale of picoseconds. Structural perturbations first occur at the special pair of chlorophyll molecules of the photosynthetic reaction centre that are photo-oxidized by light. Electron transfer to the menaquinone acceptor on the opposite side of the membrane induces a movement of this cofactor together with lower amplitude protein rearrangements. These observations reveal how proteins use conformational dynamics to stabilize the charge-separation steps of electron-transfer reactions.<br />Published by Macmillan Publishers Limited, part of Springer Nature, London
- Subjects :
- 0301 basic medicine
Photosynthetic reaction centre
Chlorophyll
Models, Molecular
klorofylli
Cytoplasm
Ubiquinone
Photosynthetic Reaction Center Complex Proteins
Electrons
02 engineering and technology
Photochemistry
medicine.disease_cause
yhteyttäminen
bakteerit
Electron Transport
03 medical and health sciences
Electron transfer
medicine
Molecule
ddc:530
Bacteriochlorophylls
bioenergetiikka
ComputingMilieux_MISCELLANEOUS
Hyphomicrobiaceae
Multidisciplinary
Binding Sites
Crystallography
[SDV.BBM.BS]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Structural Biology [q-bio.BM]
Chemistry
Blastochloris viridis
Lasers
kalvot (biologia)
Pheophytins
Biological membrane
Vitamin K 2
021001 nanoscience & nanotechnology
Acceptor
030104 developmental biology
Picosecond
Femtosecond
sense organs
Protons
0210 nano-technology
Oxidation-Reduction
röntgenkristallografia
Subjects
Details
- Language :
- English
- ISSN :
- 00280836, 14764679, and 14764687
- Database :
- OpenAIRE
- Journal :
- Nature, Nature, Nature Publishing Group, 2021, 589, pp.310-314, Nature <London> / Physical science 589, 310-314 (2021). doi:10.1038/s41586-020-3000-7, Nature, 2021, 589, pp.310-314
- Accession number :
- edsair.doi.dedup.....41b7a63a423931b71f0eaa238288174c