トレハロースのalpha,alpha-(1-->1) 結合は,アンヒドロビオティック保存の鍵です
Fernando Albertorio1, Vanessa A Chapa, Xin Chen
1Department of Chemistry, 3255 TAMU, Texas A&M University, College Station, Texas 77843, USA.
Journal of the American Chemical Society
|August 7, 2007
まとめ
アルファ,アルファ-トレハロースとアルファ,アルファ-ガラクト-トレハロースは,乾燥中に固体支持型脂質二重層 (SLB) を効果的に保存します. 二層破壊を引き起こす他の砂糖とは異なり,それらの特定の結合が鍵です.
科学分野:
- バイオフィジックス 生物物理学
- マテリアルサイエンス 材料科学
背景:
- 固体支持脂質二重層 (SLB) は細胞膜の重要なモデルですが,脱水に敏感です.
- 水の除去時にSLBの完全性を保ちることは,それらの貯蔵と適用に不可欠です.
研究 の 目的:
- 固体支持脂質二重層 (SLBs) を空気への曝露から保護する様々なサッカリドの有効性を評価する.
- 保護能力を与えるサッカライドの構造的および化学的性質を決定する.
主な方法:
- SLB保存のための6つのディサカライドとグルコースの比較分析.
- 異なる砂糖の存在下での乾燥後の二層構造保持の評価.
- 様々な砂糖を含むフォスフォリピド二重層の液晶からジェルへの相変化温度を測定する.
主要な成果:
- アルファ,アルファ-(1-->1) 結合 (例えば,アルファ,アルファ-トレハロース) を有するディサカライドは,SLB構造を効果的に保存します.
- オープン構造 (サハロース,マルトース,ラクトース,グルコース) で結晶化するサッカリドとアルファ,β-トレハロースは,SLBsを保護できませんでした.
- 脂質 (ガンリオシドGM1,ラクトシルフォスファディテイルエタノアミン,グルコシルセレブロシド) の結合糖も効果的ではなかった.
- alpha,alpha-trehaloseとalpha,alpha-galacto-trehaloseだけが相変化温度を低下させ,他のものは上昇させました.
結論:
- アルファ,アルファ-ジサカライドの軸-軸結合は,脱水中にSLBの整合性を維持するために重要です.
- サッカリドの形状と結合のタイプは,脂質二重層を安定させる能力に大きな影響を与えます.
- これらの相互作用を理解することは,脂質二重層保存のための改善された方法の開発を導くことができます.
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