Opening the door: An artificial unimolecular transmembrane channel using pore-containing helical macromolecules is presented. The self-folding, shape-persistent helical macromolecules span the lipid bilayer, resulting in extraordinary channel stability and high transporting efficiency for protons and cations. The lifetime of this channel in the lipid bilayer membrane is impressively long, rivaling those of natural protein channels.
本研究工作利用中空螺旋高分子作為骨架實現了單分子跨膜通道的構建。研究發現單分子跨膜通道在磷脂膜上非常穩定(通道開關達到20min以上),通道具有明顯的離子選擇性,能夠實現從識別到物質運輸的功能進化。深入的研究工作將展開,例如通道在膜上的排列模式與傳輸方向問題、聚合物通道的單一化問題等。感謝超分子結構與材料國家重點實驗室、國家自然科學基金(21274051,21574054等)對本工作的資助。
研究論文請參見:http://onlinelibrary.wiley.com/doi/10.1002/anie.201604071/full