Membrane Dynamics in Phototrophic Bacteria.

Annual Review of Microbiology
Conrad W Mullineaux, Lu-Ning Liu

Abstract

Photosynthetic membranes are typically densely packed with proteins, and this is crucial for their function in efficient trapping of light energy. Despite being crowded with protein, the membranes are fluid systems in which proteins and smaller molecules can diffuse. Fluidity is also crucial for photosynthetic function, as it is essential for biogenesis, electron transport, and protein redistribution for functional regulation. All photosynthetic membranes seem to maintain a delicate balance between crowding, order, and fluidity. How does this work in phototrophic bacteria? In this review, we focus on two types of intensively studied bacterial photosynthetic membranes: the chromatophore membranes of purple bacteria and the thylakoid membranes of cyanobacteria. Both systems are distinct from the plasma membrane, and both have a distinctive protein composition that reflects their specialized roles. Chromatophores are formed from plasma membrane invaginations, while thylakoid membranes appear to be an independent intracellular membrane system. We discuss the techniques that can be applied to study the organization and dynamics of these membrane systems, including electron microscopy techniques, atomic force microscopy, and many var...Continue Reading

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Citations

Nov 20, 2020·International Journal of Molecular Sciences·Mieko Higuchi-TakeuchiKeiji Numata
Jan 2, 2021·Journal of Plant Physiology·John A Raven
Nov 1, 2020·Current Opinion in Biotechnology·Deng LiuHimadri B Pakrasi
Jun 11, 2021·Nature Communications·Tuomas HuokkoLu-Ning Liu
Jul 24, 2021·Royal Society Open Science·Zimeng ZhangLu-Ning Liu

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