Structures of a phycobilisome in light-harvesting and photoprotected states

MA Domínguez-Martín, PV Sauer, H Kirst, M Sutter… - Nature, 2022 - nature.com
Phycobilisome (PBS) structures are elaborate antennae in cyanobacteria and red algae,.
These large protein complexes capture incident sunlight and transfer the energy through a …

Ultrafast laser spectroscopy uncovers mechanisms of light energy conversion in photosynthesis and sustainable energy materials

D Zigmantas, T Polívka, P Persson… - Chemical Physics …, 2022 - pubs.aip.org
The invention of the laser in 1960 gave us the ruby laser, which generally produced chaotic
pulses of light. Six years later, in 1966, a concept called passive mode-locking applied to …

Differential evolution reveals the effect of polar and nonpolar solvents on carotenoids: A case study of astaxanthin optical response modeling

DD Chesalin, EA Kulikov, IA Yaroshevich… - Swarm and Evolutionary …, 2022 - Elsevier
The task to simulate realistic absorption spectra of electronic transitions in pigment
molecules takes the form of the art of optimization, particularly if one must choose between …

The role of the local environment on the structural heterogeneity of carotenoid β-ionone rings

RY Pishchalnikov, IA Yaroshevich, DV Zlenko… - Photosynthesis …, 2023 - Springer
Our analysis of the X-ray crystal structure of canthaxanthin (CAN) showed that its ketolated β-
ionone rings can adopt two energetically equal, but structurally distinct puckers. Quantum …

Structural and quantum chemical basis for OCP-mediated quenching of phycobilisomes

PV Sauer, L Cupellini, M Sutter, M Bondanza… - Science …, 2024 - science.org
Cyanobacteria use large antenna complexes called phycobilisomes (PBSs) for light
harvesting. However, intense light triggers non-photochemical quenching, where the orange …

Role of hydrogen bond alternation and charge transfer states in photoactivation of the Orange Carotenoid Protein

IA Yaroshevich, EG Maksimov, NN Sluchanko… - Communications …, 2021 - nature.com
Here, we propose a possible photoactivation mechanism of a 35-kDa blue light-triggered
photoreceptor, the Orange Carotenoid Protein (OCP), suggesting that the reaction involves …

Light activation of Orange Carotenoid Protein reveals bicycle-pedal single-bond isomerization

VU Chukhutsina, JM Baxter, A Fadini… - Nature …, 2022 - nature.com
Orange Carotenoid protein (OCP) is the only known photoreceptor which uses carotenoid
for its activation. It is found exclusively in cyanobacteria, where it functions to control light …

Trivial excitation energy transfer to carotenoids is an unlikely mechanism for non-photochemical quenching in LHCII

C Gray, T Wei, T Polívka, V Daskalakis… - Frontiers in Plant …, 2022 - frontiersin.org
Higher plants defend themselves from bursts of intense light via the mechanism of Non-
Photochemical Quenching (NPQ). It involves the Photosystem II (PSII) antenna protein …

Relaxation dynamics of high-energy excited states of carotenoids studied by UV excitation and pump–repump–probe transient absorption spectroscopy

V Kuznetsova, M Fuciman, T Polívka - Physical Chemistry Chemical …, 2023 - pubs.rsc.org
The excited states of carotenoids have been a subject of numerous studies. While a majority
of these reports target the excited state dynamics initiated by the excitation of the S2 state …

Structural basis for the carotenoid binding and transport function of a START domain

NN Sluchanko, YB Slonimskiy, NA Egorkin… - Structure, 2022 - cell.com
STARD3, a steroidogenic acute regulatory lipid transfer protein, was identified as a key
xanthophyll-binding protein in the human retina. STARD3 and its homologs in invertebrates …