Charge Recombination Kinetics of Bacterial Photosynthetic Reaction Centres Reconstituted in Liposomes: Deterministic Versus Stochastic Approach

Emiliano Altamura, Paola Albanese, Pasquale Stano, Massimo Trotta, Francesco Milano and Fabio Mavelli
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Emiliano Altamura: Department of Chemistry, Università degli studi di Bari “Aldo Moro”, Via Orabona 4, 70125 Bari, Italy
Paola Albanese: Department of Chemistry, Università degli studi di Bari “Aldo Moro”, Via Orabona 4, 70125 Bari, Italy
Pasquale Stano: Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, Strada Provinciale Lecce-Monteroni, Ecotekne, 73100 Lecce, Italy
Massimo Trotta: IPCF-CNR Istituto per i Processi Chimico Fisici, via Orabona 4, 70125 Bari, Italy
Francesco Milano: Institute of Science of Food Production (ISPA), National Research Council of Italy (CNR), Strada Provinciale Lecce-Monteroni, Ecotekne, 73100 Lecce, Italy
Fabio Mavelli: Department of Chemistry, Università degli studi di Bari “Aldo Moro”, Via Orabona 4, 70125 Bari, Italy

Data, 2020, vol. 5, issue 2, 1-15

Abstract: In this theoretical work, we analyse the kinetics of charge recombination reaction after a light excitation of the Reaction Centres extracted from the photosynthetic bacterium Rhodobacter sphaeroides and reconstituted in small unilamellar phospholipid vesicles. Due to the compartmentalized nature of liposomes, vesicles may exhibit a random distribution of both ubiquinone molecules and the Reaction Centre protein complexes that can produce significant differences on the local concentrations from the average expected values. Moreover, since the amount of reacting species is very low in compartmentalized lipid systems the stochastic approach is more suitable to unveil deviations of the average time behaviour of vesicles from the deterministic time evolution.

Keywords: reaction centres; liposomes; charge recombination; ODE; stochastic simulations (search for similar items in EconPapers)
JEL-codes: C8 C80 C81 C82 C83 (search for similar items in EconPapers)
Date: 2020
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