Spin-dependent electron transmission through bacteriorhodopsin embedded in purple membrane

被引：199

作者：

Mishra, Debabrata ^{[1
]}

Markus, Tal Z. ^{[1
]}

Naaman, Ron ^{[1
]}

Kettner, Matthias ^{[3
]}

Goehler, Benjamin ^{[3
]}

Zacharias, Helmut ^{[3
]}

Friedman, Noga ^{[2
]}

Sheves, Mordechai ^{[2
]}

Fontanesi, Claudio ^{[4
]}

机构：

[1] Weizmann Inst Sci, Dept Chem Phys, IL-76100 Rehovot, Israel

[2] Weizmann Inst Sci, Dept Organ Chem, IL-76100 Rehovot, Israel

[3] Univ Munster, Inst Phys, D-48149 Munster, Germany

[4] Univ Modena, Dept Chem, I-41100 Modena, Italy

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2013年 / 110卷 / 37期

基金：

以色列科学基金会;

关键词：

electron transfer; electrochemistry; magnetic effect; chirality; SELF-ASSEMBLED MONOLAYERS; NICKEL; SELECTIVITY; CONDUCTION; TRANSPORT; PROTEINS; ACID; DNA;

D O I：

10.1073/pnas.1311493110

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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.

引用

页码：14872 / 14876

页数：5

共 23 条

[1] COMPARATIVE POTENTIODYNAMIC STUDY OF NICKEL IN STILL AND STIRRED SULFURIC ACID POTASSIUM SULFATE-SOLUTIONS IN THE 0.4-5.7 PH RANGE [J].