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Nematocida displode...
Nematocida displodere mechanosensitive ion channel of small conductance 2 assembles into a unique 6-channel super-structure in vitro
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- Berg, Alexandra (author)
- Umeå universitet,Molekylär Infektionsmedicin, Sverige (MIMS),Umeå Centre for Microbial Research (UCMR),Institutionen för medicinsk kemi och biofysik,Wallenberg centrum för molekylär medicin vid Umeå universitet (WCMM),Institutionen för molekylärbiologi (Medicinska fakulteten)
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- Berntsson, Ronnie P.-A. (author)
- Umeå universitet,Institutionen för medicinsk kemi och biofysik,Wallenberg centrum för molekylär medicin vid Umeå universitet (WCMM),Umeå Centre for Microbial Research (UCMR)
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- Barandun, Jonas (author)
- Umeå universitet,Molekylär Infektionsmedicin, Sverige (MIMS),Umeå Centre for Microbial Research (UCMR),Institutionen för molekylärbiologi (Medicinska fakulteten)
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(creator_code:org_t)
- Public Library of Science (PLoS), 2024
- 2024
- English.
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In: PLOS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 19:7
- Related links:
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https://doi.org/10.1...
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https://umu.diva-por... (primary) (Raw object)
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Abstract
Subject headings
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- Mechanosensitive ion channels play an essential role in reacting to environmental signals and sustaining cell integrity by facilitating ion flux across membranes. For obligate intracellular pathogens like microsporidia, adapting to changes in the host environment is crucial for survival and propagation. Despite representing a eukaryote of extreme genome reduction, microsporidia have expanded the gene family of mechanosensitive ion channels of small conductance (mscS) through repeated gene duplication and horizontal gene transfer. All microsporidian genomes characterized to date contain mscS genes of both eukaryotic and bacterial origin. Here, we investigated the cryo-electron microscopy structure of the bacterially derived mechanosensitive ion channel of small conductance 2 (MscS2) from Nematocida displodere, an intracellular pathogen of Caenorhabditis elegans. MscS2 is the most compact MscS-like channel known and assembles into a unique superstructure in vitro with six heptameric MscS2 channels. Individual MscS2 channels are oriented in a heterogeneous manner to one another, resembling an asymmetric, flexible six-way cross joint. Finally, we show that microsporidian MscS2 still forms a heptameric membrane channel, however the extreme compaction suggests a potential new function of this MscS-like protein.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Cell- och molekylärbiologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Cell and Molecular Biology (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinsk bioteknologi -- Medicinsk bioteknologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Medical Biotechnology -- Medical Biotechnology (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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