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Herdman M, Isbilir B, von Kügelgen A, Schulze U, Wainman A, Bharat TAM. Cell cycle dependent coordination of surface layer biogenesis in Caulobacter crescentus. Nat Commun 2024; 15:3355. [PMID: 38637514 PMCID: PMC11026435 DOI: 10.1038/s41467-024-47529-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 04/04/2024] [Indexed: 04/20/2024] Open
Abstract
Surface layers (S-layers) are proteinaceous, two-dimensional paracrystalline arrays that constitute a major component of the cell envelope in many prokaryotic species. In this study, we investigated S-layer biogenesis in the bacterial model organism Caulobacter crescentus. Fluorescence microscopy revealed localised incorporation of new S-layer at the poles and mid-cell, consistent with regions of cell growth in the cell cycle. Light microscopy and electron cryotomography investigations of drug-treated bacteria revealed that localised S-layer insertion is retained when cell division is inhibited, but is disrupted upon dysregulation of MreB or lipopolysaccharide. We further uncovered that S-layer biogenesis follows new peptidoglycan synthesis and localises to regions of high cell wall turnover. Finally, correlated cryo-light microscopy and electron cryotomographic analysis of regions of S-layer insertion showed the presence of discontinuities in the hexagonal S-layer lattice, contrasting with other S-layers completed by defined symmetric defects. Our findings present insights into how C. crescentus cells form an ordered S-layer on their surface in coordination with the biogenesis of other cell envelope components.
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Affiliation(s)
- Matthew Herdman
- Sir William Dunn School of Pathology, University of Oxford, Oxford, OX1 3RE, UK
| | - Buse Isbilir
- Structural Studies Division, MRC Laboratory of Molecular Biology, Cambridge, CB2 0QH, UK
| | - Andriko von Kügelgen
- Sir William Dunn School of Pathology, University of Oxford, Oxford, OX1 3RE, UK
- Structural Studies Division, MRC Laboratory of Molecular Biology, Cambridge, CB2 0QH, UK
| | - Ulrike Schulze
- Cell Biology Division, MRC Laboratory of Molecular Biology, Cambridge, CB2 0QH, UK
| | - Alan Wainman
- Sir William Dunn School of Pathology, University of Oxford, Oxford, OX1 3RE, UK
| | - Tanmay A M Bharat
- Structural Studies Division, MRC Laboratory of Molecular Biology, Cambridge, CB2 0QH, UK.
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Barabas O, Smyshlyaev G, Isbilir B, Khedkar S, Rojas‐Cordova C, Bateman AG, Bork P. Structure and function of DNA transposition assemblies involved in antibiotic resistance spreading. FASEB J 2022. [DOI: 10.1096/fasebj.2022.36.s1.0i103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Orsolya Barabas
- Department of Molecular BiologyUniversity of GenevaGeneva
- Structural and Computational Biology UnitEuropean Molecular Biology LaboratoryHeidelberg
| | - Georgy Smyshlyaev
- Department of Molecular BiologyUniversity of GenevaGeneva
- Structural and Computational Biology UnitEuropean Molecular Biology LaboratoryHeidelberg
| | - Buse Isbilir
- Department of Molecular BiologyUniversity of GenevaGeneva
- Structural and Computational Biology UnitEuropean Molecular Biology LaboratoryHeidelberg
| | - Supriya Khedkar
- Structural and Computational Biology UnitEuropean Molecular Biology LaboratoryHeidelberg
| | - Carlos Rojas‐Cordova
- Department of Molecular BiologyUniversity of GenevaGeneva
- Structural and Computational Biology UnitEuropean Molecular Biology LaboratoryHeidelberg
| | - Alex G. Bateman
- European Bioinformatics InstituteEuropean Molecular Biology LaboratoryHinxton
| | - Peer Bork
- Structural and Computational Biology UnitEuropean Molecular Biology LaboratoryHeidelberg
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Smyshlyaev G, Isbilir B, Rojas-Cordova C, Rubio-Cosials A, Lambertsen L, Bateman AG, Barabas O. Structural insights into the transposition of antibiotic resistance. Acta Crystallogr A Found Adv 2021. [DOI: 10.1107/s0108767321091133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Tamamouna V, Rahman MM, Petersson M, Charalambous I, Kux K, Mainor H, Bolender V, Isbilir B, Edgar BA, Pitsouli C. Remodelling of oxygen-transporting tracheoles drives intestinal regeneration and tumorigenesis in Drosophila. Nat Cell Biol 2021; 23:497-510. [PMID: 33972730 PMCID: PMC8567841 DOI: 10.1038/s41556-021-00674-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 03/31/2021] [Indexed: 02/03/2023]
Abstract
The Drosophila trachea, as the functional equivalent of mammalian blood vessels, senses hypoxia and oxygenates the body. Here, we show that the adult intestinal tracheae are dynamic and respond to enteric infection, oxidative agents and tumours with increased terminal branching. Increased tracheation is necessary for efficient damage-induced intestinal stem cell (ISC)-mediated regeneration and is sufficient to drive ISC proliferation in undamaged intestines. Gut damage or tumours induce HIF-1α (Sima in Drosophila), which stimulates tracheole branching via the FGF (Branchless (Bnl))-FGFR (Breathless (Btl)) signalling cascade. Bnl-Btl signalling is required in the intestinal epithelium and the trachea for efficient damage-induced tracheal remodelling and ISC proliferation. Chemical or Pseudomonas-generated reactive oxygen species directly affect the trachea and are necessary for branching and intestinal regeneration. Similarly, tracheole branching and the resulting increase in oxygenation are essential for intestinal tumour growth. We have identified a mechanism of tracheal-intestinal tissue communication, whereby damage and tumours induce neo-tracheogenesis in Drosophila, a process reminiscent of cancer-induced neoangiogenesis in mammals.
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Affiliation(s)
- Vasilia Tamamouna
- University of Cyprus, Department of Biological Sciences, 1 Panepistimiou Avenue, 2109 Aglantzia, Cyprus
| | - M. Mahidur Rahman
- Huntsman Cancer Institute, Department of Oncological Sciences, University of Utah, Salt Lake City, UT 84112, USA
| | - Monika Petersson
- German Cancer Research Center (DKFZ)-Center for Molecular Biology (ZMBH), University of Heidelberg Alliance, Im Neuenheimer Feld 282, 69120 Heidelberg, Germany
| | - Irini Charalambous
- University of Cyprus, Department of Biological Sciences, 1 Panepistimiou Avenue, 2109 Aglantzia, Cyprus
| | - Kristina Kux
- University of Cyprus, Department of Biological Sciences, 1 Panepistimiou Avenue, 2109 Aglantzia, Cyprus
| | - Hannah Mainor
- Huntsman Cancer Institute, Department of Oncological Sciences, University of Utah, Salt Lake City, UT 84112, USA
| | - Verena Bolender
- German Cancer Research Center (DKFZ)-Center for Molecular Biology (ZMBH), University of Heidelberg Alliance, Im Neuenheimer Feld 282, 69120 Heidelberg, Germany
| | - Buse Isbilir
- German Cancer Research Center (DKFZ)-Center for Molecular Biology (ZMBH), University of Heidelberg Alliance, Im Neuenheimer Feld 282, 69120 Heidelberg, Germany
| | - Bruce A. Edgar
- Huntsman Cancer Institute, Department of Oncological Sciences, University of Utah, Salt Lake City, UT 84112, USA,Corresponding authors ,
| | - Chrysoula Pitsouli
- University of Cyprus, Department of Biological Sciences, 1 Panepistimiou Avenue, 2109 Aglantzia, Cyprus,Corresponding authors ,
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