Silver nanoparticles strongly affect the properties of bacteriorhodopsin, a photosensitive protein of Halobacterium salinarium purple membranes

被引：6

作者：

Mochalov, Konstantin ^{[1
,2
]}

Solovyeva, Daria ^{[1
,2
]}

Chistyakov, Anton ^{[1
,2
]}

Zimka, Boris ^{[2
]}

Lukashev, Eugeni ^{[3
]}

Nabiev, Igor ^{[1
,4
]}

Oleinikov, Vladimir ^{[1
,2
]}

机构：

[1] Natl Res Nucl Univ MEPhI Moscow Engn Phys Inst, Lab Nanobioengn, 31 Kashirskoye Sh, Moscow 115409, Russia

[2] Russian Acad Sci, Shemyakin Ovchinnikov Inst Bioorgan Chem, 16-10 Miklukho Maklaya, Moscow 117997, Russia

[3] Moscow MV Lomonosov State Univ, 1-12 Leninskie Gory, Moscow 119991, Russia

[4] Univ Reims, Lab Rech Nanosci, LRN, EA4682, F-51100 Reims, France

来源：

MATERIALS TODAY-PROCEEDINGS | 2016年 / 3卷 / 02期

关键词：

bacteriorhodopsin; silver nanoparticles; purple membrane; Raman scattering; SERS; RAMAN-SPECTROSCOPY; ENERGY-TRANSFER; QUANTUM DOTS;

D O I：

10.1016/j.matpr.2016.01.081

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Interaction of silver nanoparticles (AgNPs) with purple membranes (PM) has been studied using atomic force microscopy and optical spectroscopy. It was shown that AgNPs alter the photocycle of the bacteriorhodopsin (BRh) molecules located in SERS-active spots. AgNPs suppresses the photocycle by "freezing" the state of retinal in which BRh has bound AgNPs. Outside SERS-active spots, BRh molecules retain the capacity for carrying out the photocycle but with shorter lifetimes of its photointermediate states. Thus, the AgNPs may affect the BRh photocycle through its acceleration in the regions of weak AgNPs-PM interaction or by the photocycle freezing in the SERS-active spots. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：502 / 506

页数：5

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