Publications by authors named "G Yu Riznichenko"
Article Synopsis
- Plastocyanin is a small protein that helps transfer electrons by forming temporary complexes with cytochrome and photosystem 1, making traditional structure determination difficult.
- Due to its transient nature, researchers have turned to AI, particularly AlphaFold 3, to predict the structures of these short-lived complexes.
- The study found that the structure predicted by AlphaFold 3 closely matched experimental data from cryo-EM and molecular dynamics, whereas it differed from the orientation suggested by previously available NMR data.
Article Synopsis
- Photosystem II (PSII) is a key component of photosynthesis that is highly sensitive to environmental changes, and its properties vary among different autotrophic organisms, contributing to their stress resilience.
- A new mathematical modeling approach has been developed to analyze the oxygen-evolving complex and light-harvesting characteristics of PSII, utilizing chlorophyll a fluorescence dynamics in samples treated with a specific inhibitor.
- This model simplifies the analysis into three ordinary differential equations, allowing for the study of PSII heterogeneity across various organisms and environmental conditions, leading to insights into their adaptability and stress responses.
The model of thylakoid membrane system (T-M model) (Belyaeva et al. Photosynth Res 2019, 140:1-19) has been improved in order to analyze the induction data for dark-adapted samples of algal (Scenedesmus obliques) and cyanobacterial (Synechocystis sp. PCC 6803) cells.
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- The investigation focused on modeling and understanding the regulation of electron transport processes in the photosynthetic membrane using mathematical and computer simulations at Lomonosov Moscow State University.
- Detailed kinetic models were created to analyze thylakoid membrane processes and using data fitting techniques, researchers were able to infer previously undetermined parameters.
- This research utilized various modeling methods, including agent-based Monte Carlo modeling and multiparticle simulations, to explore the dynamics and interactions at molecular and subcellular levels involved in photosynthesis.
Monitoring of the photosynthetic activity of natural and artificial biocenoses is of crucial importance. Photosynthesis is the basis for the existence of life on Earth, and a decrease in primary photosynthetic production due to anthropogenic influences can have catastrophic consequences. Currently, great efforts are being made to create technologies that allow continuous monitoring of the state of the photosynthetic apparatus of terrestrial plants and microalgae.
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