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Spatial distribution of lipid headgroups and water molecules at membrane/water interfaces visualized by three-dimensional scanning force microscopy
https://doi.org/10.24517/00010579
https://doi.org/10.24517/000105797f7838af-464e-4580-b30a-2c215584f986
名前 / ファイル | ライセンス | アクション |
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SC-PR-ASAKAWA-H-9013.pdf (491.4 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-10-03 | |||||
タイトル | ||||||
タイトル | Spatial distribution of lipid headgroups and water molecules at membrane/water interfaces visualized by three-dimensional scanning force microscopy | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
ID登録 | ||||||
ID登録 | 10.24517/00010579 | |||||
ID登録タイプ | JaLC | |||||
著者 |
Asakawa, Hitoshi
× Asakawa, Hitoshi× Yoshioka, Shunsuke× Nishimura, Ken-ichi× Fukuma, Takeshi |
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著者別表示 |
淺川, 雅
× 淺川, 雅× 福間, 剛士 |
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提供者所属 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 金沢大学ナノマテリアル研究所 | |||||
書誌情報 |
ACS Nano 巻 6, 号 10, p. 9013-9020, 発行日 2012-10-23 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1936-0851 | |||||
NCID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA1240653X | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1021/nn303229j | |||||
出版者 | ||||||
出版者 | American Chemical Society | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | At biological interfaces, flexible surface structures and mobile water interact with each other to present non-uniform three-dimensional (3D) distributions. In spite of their impact on biological functions, molecular-scale understanding of such phenomena has remained elusive. Here we show direct visualization of such interfacial structures with subnanometer-scale resolution by 3D scanning force microscopy (3D-SFM). We measured a 3D force distribution at an interface between a model biological membrane and buffer solution by scanning a sharp tip within the 3D interfacial space. We found that vertical cross sections of the 3D image taken along a specific lateral direction show characteristic molecular-scale contrasts tilted at 30° to the membrane surface. Detailed analysis of the 3D image reveals that the tilted contrast corresponds to the time-averaged conformation of fluctuating lipid headgroups. On the basis of the obtained results, we discuss the relationships among the hydration structure, headgroup fluctuation, molecular fluidity, and mechanical strength of the membrane. The results demonstrate that 3D-SFM is capable of visualizing averaged 3D distribution of fluctuating surface structures as well as that of mobile water (i.e., hydration structure) at interfaces between biological systems and water. © 2012 American Chemical Society. | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa |