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The structured orga...
The structured organization of Deinococcus radiodurans' cell envelope
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- Farci, Domenica (author)
- Umeå universitet,Kemiska institutionen,Department of Plant Physiology, Warsaw University of Life Sciences - Szkoła Główna Gospodarstwa Wiejskiego, Warsaw, Poland; Laboratory of Plant Physiology and Photobiology, Department of Life and Environmental Sciences, Università degli Studi di Cagliari, Cagliari, Italy
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- Haniewicz, Patrycja (author)
- Department of Plant Physiology, Warsaw University of Life Sciences - Szkoła Główna Gospodarstwa Wiejskiego, Warsaw, Poland
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- Piano, Dario (author)
- Department of Plant Physiology, Warsaw University of Life Sciences - Szkoła Główna Gospodarstwa Wiejskiego, Warsaw, Poland; Laboratory of Plant Physiology and Photobiology, Department of Life and Environmental Sciences, Università degli Studi di Cagliari, Cagliari, Italy
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(creator_code:org_t)
- 2022-11-02
- 2022
- English.
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In: Proceedings of the National Academy of Sciences of the United States of America. - : National Academy of Science. - 0027-8424 .- 1091-6490. ; 119:45
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Abstract
Subject headings
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- Surface layers (S-layers) are highly ordered coats of proteins localized on the cell surface of many bacterial species. In these structures, one or more proteins form elementary units that self-assemble into a crystalline monolayer tiling the entire cell surface. Here, the cell envelope of the radiation-resistant bacterium Deinococcus radiodurans was studied by cryo-electron microscopy, finding the crystalline regularity of the S-layer extended into the layers below (outer membrane, periplasm, and inner membrane). The cell envelope appears to be highly packed and resulting from a three-dimensional crystalline distribution of protein complexes organized in close continuity yet allowing a certain degree of free space. The presented results suggest how S-layers, at least in some species, are mesoscale assemblies behaving as structural and functional scaffolds essential for the entire cell envelope.
Subject headings
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
- NATURVETENSKAP -- Biologi -- Mikrobiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Microbiology (hsv//eng)
Keyword
- cryo-electron crystallography
- cryo-electron tomography
- S-layer
- SDBC
- Type IV piliation system
Publication and Content Type
- ref (subject category)
- art (subject category)
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