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関連する概念動画

Asymmetric Lipid Bilayer01:35

Asymmetric Lipid Bilayer

Biological membranes show uneven distribution of different types of lipids in the inner and outer layers, resulting in transverse asymmetric membranes. The treatment of the erythrocyte membrane with the enzyme phospholipase confirmed the asymmetric nature of the lipid bilayer. The enzyme hydrolyzes lipids into fatty acids and hydrophilic groups. The phospholipase acts only on the outer layer of the membrane, while the inner layer remains intact. The phospholipase treatment resulted in 80%...
Structure of Lipids03:38

Structure of Lipids

Lipids include a diverse group of compounds that are largely nonpolar in nature. This is because they are hydrocarbons that include mostly nonpolar carbon-carbon or carbon-hydrogen bonds. Non-polar molecules are hydrophobic (“water fearing”), or insoluble in water. Lipids perform many different functions in a cell. Cells store energy for long-term use in the form of fats. Lipids also provide insulation from the environment for plants and animals. For example, they help keep aquatic birds and...
Structure of Lipids03:38

Structure of Lipids

Lipids include a diverse group of compounds that are largely nonpolar in nature. This is because they are hydrocarbons that include mostly nonpolar carbon-carbon or carbon-hydrogen bonds. Non-polar molecules are hydrophobic (“water fearing”), or insoluble in water. Lipids perform many different functions in a cell. Cells store energy for long-term use in the form of fats. Lipids also provide insulation from the environment for plants and animals. For example, they help keep aquatic birds and...
Structure of Lipids03:38

Structure of Lipids

Lipids include a diverse group of compounds that are largely nonpolar in nature. This is because they are hydrocarbons that include mostly nonpolar carbon-carbon or carbon-hydrogen bonds. Non-polar molecules are hydrophobic (“water fearing”), or insoluble in water. Lipids perform many different functions in a cell. Cells store energy for long-term use in the form of fats. Lipids also provide insulation from the environment for plants and animals. For example, they help keep aquatic birds and...
Formation of Lipopolysaccharides01:19

Formation of Lipopolysaccharides

Lipopolysaccharides (LPS) are crucial components of the outer membrane of Gram-negative bacteria, serving both structural and functional roles. It contributes to membrane stability and protects bacteria from host immune responses. LPS is composed of three major regions—lipid A, a core oligosaccharide, and an O antigen. The biosynthesis and assembly of LPS involve a highly coordinated set of enzymatic reactions and transport mechanisms. Additionally, LPS is recognized as an endotoxin, triggering...
Lipids as Anchors01:32

Lipids as Anchors

In the plasma membrane, the lipids forming the bilayer can also act as an anchor to tether proteins to the membrane. The three main types of lipid anchors found in eukaryotes are – prenyl groups, fatty acyl groups, and glycosylphosphatidylinositol or GPI groups. Prenyl and fatty acyl groups act as anchors on the cytosolic surface of the membrane, whereas GPI anchors proteins on the extracellular side.
The carboxy-terminal of most of the prenylated proteins, such as Ras proteins, contains the...

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Facile Preparation of Internally Self-assembled Lipid Particles Stabilized by Carbon Nanotubes
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剪定下での脂質によって形成される高度に指向した立方相.

Annela M Seddon1, Gudrun Lotze, Tomás S Plivelic

  • 1H.H. Wills Physics Laboratory, University of Bristol, United Kingdom. annela.seddon@bristol.ac.uk

Journal of the American Chemical Society
|August 10, 2011
PubMed
まとめ
この要約は機械生成です。

制御された水分とシーアフローにより,スポンジ (L) 段階から並べられた反逆バイコンティヌーブキュービック (Q) (II)) 脂質相が生成されます. この堅牢な方法は,ナノマテリアルのテンプレートとタンパク質の研究のために高度に整合したQ (((II)) サンプルを生成します.

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High-throughput Crystallization of Membrane Proteins Using the Lipidic Bicelle Method
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High-throughput Crystallization of Membrane Proteins Using the Lipidic Bicelle Method

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Atomic Force Microscopy Imaging and Force Spectroscopy of Supported Lipid Bilayers
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Atomic Force Microscopy Imaging and Force Spectroscopy of Supported Lipid Bilayers

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関連する実験動画

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Facile Preparation of Internally Self-assembled Lipid Particles Stabilized by Carbon Nanotubes
09:47

Facile Preparation of Internally Self-assembled Lipid Particles Stabilized by Carbon Nanotubes

Published on: February 19, 2016

High-throughput Crystallization of Membrane Proteins Using the Lipidic Bicelle Method
07:26

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Atomic Force Microscopy Imaging and Force Spectroscopy of Supported Lipid Bilayers
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科学分野:

  • マテリアルサイエンス 材料科学
  • ソフトマター物理学 ソフトマター物理学
  • バイオフィジックス 生物物理学

背景:

  • スポンジ (L(3) や逆二連続立方体 (Q(II) のような脂質相は,生物システムや材料科学において極めて重要です.
  • これらの段階の構造と方向を制御することは,高度なアプリケーションにとって不可欠です.
  • 調整された脂質相を生成するための既存の方法は,複雑または範囲が制限されることがあります.

研究 の 目的:

  • マクロスコーピカルに指向した反転バイコンティヌーブキュービック (Q(II)) 脂質相を形成するための新しい方法を実証する.
  • 制御された条件下でスポンジ (L) (3) 段階から指向型Q (II) 段階への移行を調査する.
  • 調整された大量Q ((II)) サンプルの生産のための堅牢で一般化可能な経路を確立する.

主な方法:

  • モノオリン/ブタンジオール/水系をスタートスポンジ (L(3) 段階として利用する.
  • システムの組成を変更するために制御された水分を適用します.
  • 毛細血管とクーエット幾何学におけるシーアフローを誘導して,形成中の立方相を方向づけます.
  • 構造と方向性を確認するために,その結果生じる脂質相の特徴づけ.

主要な成果:

  • L(3) 段階から,マクロスコープ的に指向された逆二連続立方体 (Q(II)) 段階の形成が成功裏に実証されました.
  • 制御された水分とシアフローがダイヤモンド (Q) (II) (D)) 立方相への移行を誘導することを示した.
  • Q ((II)) ((D)) 段階の方向性は,異なる幾何学的なシーアフローによって達成されていることが確認されました.
  • 毛細血管とクーエット流域におけるメソッドの堅強さと一般化性を検証した.

結論:

  • シーアフロー中の制御された水分補給は,マクロスコープ的に指向されたQ (((II)) 脂質相への堅固な経路を提供します.
  • この方法は,高度に整合した大量Q (II) サンプルを生産するためのスケーラブルなアプローチを提供します.
  • 整合されたQ(II) 段階は,ナノマテリアルのテンプレートとタンパク質構造の研究において,重要な潜在的な応用がある.