デノボd-AAペプチドからなる右手の螺旋状の折り畳み
Peng Teng1, Ning Ma1, Darrell Cole Cerrato1
1Department of Chemistry, University of South Florida , 4202 East Fowler Avenue, Tampa, Florida 33620, United States.
Journal of the American Chemical Society
|May 9, 2017
まとめ
研究者らは新型のd-sulfono-γ-AAペプチドハイブリッドフォルダマーを合成し,よく定義された螺旋構造を明らかにした. これらの発見は新しい生物物質や薬の分子を 設計するための道を切り開きます
科学分野:
- 化学合成と構造生物学
- ペプチドミメティックと折りたたみ化学
背景:
- ペプチド/タンパク質を模倣する新型の折り畳み構造を設計することは困難ですが,バイオ材料と医療の応用には不可欠です.
- 非天然のl-sulfono-γ-AAペプチドは有望だが,そのエナントイオマーであるd-sulfono-γ-AAペプチドは構造データがないため未研究である.
研究 の 目的:
- D-スルフォノ-γ-AAペプチドハイブリッドの合成と構造的特徴を報告する.
- これらの新しいハイブリッドの折りたたみ構造を原子レベルで解明する.
主な方法:
- 2:1 l-アミノ酸/d-スルフォノ-γ-AAペプチドハイブリッドの合成
- 高解像度3D構造の決定のための単結晶X線結晶学.
- 溶液 2D NMR,循環型二重化 (CD) 研究,構造検証のための分子動力学シミュレーション.
主要な成果:
- 新種のハイブリッド・フォルダマーの合成とX線結晶構造の成功
- 独特の螺旋パラメータを持つ明確に定義された右向きの螺旋形状の実証.
- NMR,CD,分子動力学シミュレーションで裏付けられた構造的発見.
結論:
- この研究は,d-sulfono-γ-AAペプチドハイブリッドの最初の原子レベルでの理解を提供します.
- 解明された螺旋構造は,新しい折り畳み可能なバイオポリマーの合理的な設計を導くことが期待されています.
- この独特な折り畳み材料を用いた バイオマテリアルの開発と バイオメディカル応用への道を開きます
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