Gas vesicles
نویسندگان
چکیده
منابع مشابه
Haloarchaea and the Formation of Gas Vesicles
Halophilic Archaea (Haloarchaea) thrive in salterns containing sodium chloride concentrations up to saturation. Many Haloarchaea possess genes encoding gas vesicles, but only a few species, such as Halobacterium salinarum and Haloferax mediterranei, produce these gas-filled, proteinaceous nanocompartments. Gas vesicles increase the buoyancy of cells and enable them to migrate vertically in the ...
متن کاملGas vesicles across kingdoms: a comparative solid state NMR study
The buoyancy organelles of aquatic microorganisms have to meet stringent specifications: allowing gases to equilibrate freely across the proteinaceous shell, preventing the condensation of water vapor inside the hollow cavity, and resisting collapse under hydrostatic pressures that vary with column depth. These properties are provided by the 7–8 kDa gas vesicle protein A (GvpA), repeats of whic...
متن کاملAn Amyloid Organelle: Solid State NMR Evidence for Cross-Beta Assembly of Gas Vesicles
The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Background: The gas vesicles of aquatic microorganisms are hollow proteinaceous shells with remarkable physical properties that enable them to function as floatation organelles. Result: The gas vesicle subunits associate in a cross-beta arrangement. Conclusion: The gas vesicle ...
متن کاملAn amyloid organelle, solid-state NMR evidence for cross-β assembly of gas vesicles.
Functional amyloids have been identified in a wide range of organisms, taking on a variety of biological roles and being controlled by remarkable mechanisms of directed assembly. Here, we report that amyloid fibrils constitute the ribs of the buoyancy organelles of Anabaena flos-aquae. The walls of these gas-filled vesicles are known to comprise a single protein, GvpA, arranged in a low pitch h...
متن کاملGas vesicles across kingdoms: a comparative solid-state nuclear magnetic resonance study.
The buoyancy organelles of aquatic microorganisms have to meet stringent specifications: allowing gases to equilibrate freely across the proteinaceous shell, preventing the condensation of water vapor inside the hollow cavity and resisting collapse under hydrostatic pressures that vary with column depth. These properties are provided by the 7- to 8-kDa gas vesicle protein A (GvpA), repeats of w...
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ژورنال
عنوان ژورنال: Microbiological Reviews
سال: 1994
ISSN: 0146-0749
DOI: 10.1128/mr.58.1.94-144.1994