title: Investigation of Stability of Photosynthetic Reaction Center and Quantum Dot Hybrid Films.
abstract: The efficiency of interaction (efficiency of energy transfer) between various quantum dots (QDs) and photosynthetic reaction centers (RCs) from the purple bacterium Rhodobacter sphaeroides and conditions of long-term stability of functioning of such hybrid complexes in film preparations were investigated. It was found that dry films containing RCs and QDs and maintained at atmospheric humidity are capable to keep their functional activity for at least some months as judging by results of measurement of their spectral characteristics, efficiency of energy transfer from QDs to RCs, and RC electron-transport activity. Addition of trehalose to the films giving them still greater stability is especially expressed for films maintained at low humidity. These stable hybrid film structures are promising for further biotechnological studies for developing new phototransformation devices.
authors.affiliation: Lomonosov Moscow State University, Biological Faculty, Moscow, 119991, Russia. knox@biophys.msu.ru.
authors.forename: E P
authors.initials: EP
authors.lastname: Lukashev
authors.forename: P P
authors.initials: PP
authors.lastname: Knox
authors.forename: I P
authors.initials: IP
authors.lastname: Oleinikov
authors.forename: N Kh
authors.initials: NKh
authors.lastname: Seifullina
authors.forename: N P
authors.initials: NP
authors.lastname: Grishanova
mesh_terms: D001709:Biotechnology; D004579:Electron Transport; D004735:Energy Transfer; D045322:Photosynthetic Reaction Center Complex Proteins / Q000378:metabolism*; D055550:Protein Stability; D045663:Quantum Dots / Q000378:metabolism*; D012242:Rhodobacter sphaeroides / Q000378:metabolism*; D014199:Trehalose
chemical_list: D045322:Photosynthetic Reaction Center Complex Proteins; D014199:Trehalose