How orange carotenoid protein controls the excited state dynamics of canthaxanthin

A Arcidiacono, D Accomasso, L Cupellini… - Chemical …, 2023 - pubs.rsc.org
Orange Carotenoid Protein (OCP) is a ketocarotenoid-binding protein essential for
photoprotection in cyanobacteria. The main steps of the photoactivated conversion which …

The Orange Carotenoid Protein triggers cyanobacterial photoprotection by quenching bilins via a structural switch of Its carotenoid

N Liguori, IHM van Stokkum… - Journal of the …, 2024 - ACS Publications
Cyanobacteria were the first microorganisms that released oxygen into the atmosphere
billions of years ago. To do it safely under intense sunlight, they developed strategies that …

Unifying Perspective of the Ultrafast Photodynamics of Orange Carotenoid Proteins from Synechocystis: Peril of High-Power Excitation, Existence of Different S …

S Niziński, A Wilson, LM Uriarte, C Ruckebusch… - JACS Au, 2022 - ACS Publications
A substantial number of Orange Carotenoid Protein (OCP) studies have aimed to describe
the evolution of singlet excited states leading to the formation of a photoactivated form …

Molecular mechanisms of activation in the orange carotenoid protein revealed by molecular dynamics

M Bondanza, L Cupellini, P Faccioli… - Journal of the American …, 2020 - ACS Publications
Light-harvesting in photosynthesis is accompanied by photoprotective processes. In
cyanobacteria, the photoprotective role is played by a specialized complex, the orange …

Spectral signatures of canthaxanthin translocation in the Orange Carotenoid Protein

NB Pigni, KL Clark, WF Beck… - The Journal of Physical …, 2020 - ACS Publications
The orange carotenoid protein (OCP) is involved in the photoprotective processes in
cyanobacteria via nonphotochemical quenching. Triggered by blue-green light absorption …

Functional specialization of expanded orange carotenoid protein paralogs in subaerial Nostoc species

YW Yang, K Liu, D Huang, C Yu, SZ Chen… - Plant …, 2023 - academic.oup.com
Orange carotenoid protein (OCP) is a photoactive protein that participates in the
photoprotection of cyanobacteria. There are 2 full-length OCP proteins, 4 N-terminal …

Insights into energy quenching mechanisms and carotenoid uptake by orange carotenoid protein homologs: HCP4 and CTDH

J Sklyar, A Wilson, D Kirilovsky, N Adir - International Journal of Biological …, 2024 - Elsevier
Photodamage to the photosynthetic apparatus by excessive light radiation has led to the
evolution of a variety of energy dissipation mechanisms. A mechanism that exists in some …

Excited‐State Evolution of Keto‐Carotenoids after Excess Energy Excitation in the UV Region

T Khan, R Litvin, V Šebelík, T Polívka - ChemPhysChem, 2021 - Wiley Online Library
Carotenoids are molecules with rich photophysics that are in many biological systems
involved in photoprotection. Yet, their response to excess energy excitation is only scarcely …

UV Excitation of Carotenoid Binding Proteins OCP and HCP: Excited‐State Dynamics and Product Formation

T Khan, V Kuznetsova, MA Dominguez‐Martin… - …, 2022 - Wiley Online Library
Over the last decade the orange carotenoid protein (OCP) gained attention due to its role in
photoprotection in cyanobacteria. Recently, other carotenoid binding proteins such as …

Sub‐lithic photosynthesis in hot desert habitats

M Gwizdala, PH Lebre, G Maggs‐Kölling… - Environmental …, 2021 - Wiley Online Library
In hyper‐arid soil environments, photosynthetic microorganisms are largely restricted to
hypolithic (sub‐lithic) habitats: ie, on the ventral surfaces of translucent pebbles in desert …