論文

査読有り 筆頭著者 本文へのリンクあり 国際誌
2015年10月

Unidirectional incorporation of a bacterial mechanosensitive channel into liposomal membranes

FASEB JOURNAL
  • Takeshi Nomura
  • ,
  • Charles D. Cox
  • ,
  • Navid Bavi
  • ,
  • Masahiro Sokabe
  • ,
  • Boris Martinac

29
10
開始ページ
4334
終了ページ
4345
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1096/fj.15-275198
出版者・発行元
FEDERATION AMER SOC EXP BIOL

The bacterial mechanosensitive channel of small conductance (MscS) plays a crucial role in the protection of bacterial cells against hypo-osmotic shock. The functional characteristics of MscS have been extensively studied using liposomal reconstitution. This is a widely used experimental paradigm and is particularly important for mechanosensitive channels as channel activity can be probed free from cytoskeletal influence. A perpetual issue encountered using this paradigm is unknown channel orientation. Here we examine the orientation of MscS in liposomes formed using 2 ion channel reconstitution methods employing the powerful combination of patch clamp electrophysiology, confocal microscopy, and continuum mechanics simulation. Using the previously determined electrophysiological and pharmacological properties of MscS, we were able to determine that in liposomes, independent of lipid composition, MscS adopts the same orientation seen in native membranes. These results strongly support the idea that these specific methods result in uniform incorporation of membrane ion channels and caution against making assumptions about mechanosensitive channel orientation using the stimulus type alone.

リンク情報
DOI
https://doi.org/10.1096/fj.15-275198 本文へのリンクあり
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/26116700
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000361367300022&DestApp=WOS_CPL
ID情報
  • DOI : 10.1096/fj.15-275198
  • ISSN : 0892-6638
  • eISSN : 1530-6860
  • PubMed ID : 26116700
  • Web of Science ID : WOS:000361367300022

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