Departments of Chemical Physics and Organic Chemistry, Weizmann Institute, Rehovot 76100, Israel.
Proc Natl Acad Sci U S A. 2013 Sep 10;110(37):14872-6. doi: 10.1073/pnas.1311493110. Epub 2013 Aug 26.
Spin-dependent photoelectron transmission and spin-dependent electrochemical studies were conducted on purple membrane containing bacteriorhodopsin (bR) deposited on gold, aluminum/aluminum-oxide, and nickel substrates. The result indicates spin selectivity in electron transmission through the membrane. Although the chiral bR occupies only about 10% of the volume of the membrane, the spin polarization found is on the order of 15%. The electrochemical studies indicate a strong dependence of the conduction on the protein's structure. Denaturation of the protein causes a sharp drop in the conduction through the membrane.
对金、铝/氧化铝和镍基底上沉积的含有菌紫质（bR）的紫色膜进行了自旋相关光电子透射和自旋相关电化学研究。结果表明，电子通过膜的传输具有自旋选择性。尽管手性 bR 只占据膜体积的约 10%，但发现的自旋极化度约为 15%。电化学研究表明，蛋白质的结构对传导有很强的依赖性。蛋白质的变性会导致膜透过电流急剧下降。
