Results 21 to 30 of about 5,006 (168)

Fusion of purple membranes triggered by immobilization on carbon nanomembranes

Beilstein Journal of Nanotechnology, 2021
A freestanding ultrathin hybrid membrane was synthesized comprising two functional layers, that is, first, a carbon nanomembrane (CNM) produced by electron irradiation-induced cross-linking of a self-assembled monolayer (SAM) of 4′-nitro-1,1′-biphenyl-4 ...
René Riedel, Natalie Frese, Fang Yang, Martin Wortmann, Raphael Dalpke, Daniel Rhinow, Norbert Hampp, Armin Gölzhäuser   +7 more
doaj   +1 more source

Small-Molecule Analysis Based on DNA Strand Displacement Using a Bacteriorhodopsin Photoelectric Transducer: Taking ATP as an Example

Sensors, 2023
A uniformly oriented purple membrane (PM) monolayer containing photoactive bacteriorhodopsin has recently been applied as a sensitive photoelectric transducer to assay color proteins and microbes quantitatively.
Hsiu-Mei Chen, Wen-Chang Wang, Hong-Ren Chen   +2 more
doaj   +1 more source

Evolution of rhodopsin ion pumps in haloarchaea

BMC Evolutionary Biology, 2007
Background The type 1 (microbial) rhodopsins are a diverse group of photochemically reactive proteins that display a broad yet patchy distribution among the three domains of life.
Ford Doolittle W, Rodriguez-Valera Francisco, Bapteste Eric, Walsh David A, Sharma Adrian K, Papke R Thane   +5 more
doaj   +1 more source

Spontaneous and Electrically Induced Anisotropy of Composite Agarose Gels

Gels, 2022
Agarose gels containing and not bacteriorhodopsin purple membranes (incorporated before gelling) manifest spontaneous optical anisotropy. The dependencies of the anisotropy on the agarose concentration and time have been studied.
Alexandar M. Zhivkov, Svetlana H. Hristova   +1 more
doaj   +1 more source

Detection of second-order nonlinear optical magnetization by mapping normalized Stokes parameters [PDF]

, 2013
A measurable magnetic (nonlocal) contribution to the second harmonic generation (SHG) of nonmagnetic materials is an intriguing issue related to chiral materials, such as biomolecules.
Larciprete, Maria Cristina, Váró, György, Leahu Gregory, Sibilia, Concita, Gergely, Csilla, SIBILIA, Concetta, Fabio Antonio Bovino, Bovino, Fabio Antonio, Gyorgy Varo, Leahu, Gregory, Csilla Gergely, LEAHU, GRIGORE   +11 more
core   +2 more sources

Probing a polar cluster in the retinal binding pocket of bacteriorhodopsin by a chemical design approach. [PDF]

PLoS ONE, 2012
Bacteriorhodopsin has a polar cluster of amino acids surrounding the retinal molecule, which is responsible for light harvesting to fuel proton pumping.
Rosana Simón-Vázquez, Marta Domínguez, Víctor A Lórenz-Fonfría, Susana Alvarez, José-Luís Bourdelande, Angel R de Lera, Esteve Padrós, Alex Perálvarez-Marín   +7 more
doaj   +1 more source

The Function of Gas Vesicles in Halophilic Archaea and Bacteria: Theories and Experimental Evidence

Life, 2012
A few extremely halophilic Archaea (Halobacterium salinarum, Haloquadratum walsbyi, Haloferax mediterranei, Halorubrum vacuolatum, Halogeometricum borinquense, Haloplanus spp.) possess gas vesicles that bestow buoyancy on the cells. Gas vesicles are also
Aharon Oren
doaj   +1 more source

Nonlinear Optical Investigation of Microbial Chromoproteins

Frontiers in Plant Science, 2020
Membrane-bound or cytosolic light-sensitive proteins, playing a crucial role in energy- and signal-transduction processes of various photosynthetic microorganisms, have been optimized for sensing or harvesting light by myriads of years of evolution. Upon
Szilvia Krekic, Szilvia Krekic, Tomás Zakar, Zoltán Gombos, Sándor Valkai, Mark Mero, László Zimányi, Zsuzsanna Heiner, András Dér   +8 more
doaj   +1 more source

Retinal Vibrations in Bacteriorhodopsin are Mechanically Harmonic but Electrically Anharmonic: Evidence From Overtone and Combination Bands

Frontiers in Molecular Biosciences, 2021
Fundamental vibrations of the chromophore in the membrane protein bacteriorhodopsin (BR), a protonated Schiff base retinal, have been studied for decades, both by resonance Raman and by infrared (IR) difference spectroscopy.
Victor A. Lorenz-Fonfria, Kiyoshi Yagi, Shota Ito, Hideki Kandori, Hideki Kandori   +4 more
doaj   +1 more source

Films based on bacteriorhodopsin in sol-gel matrices [PDF]

, 2005
The bacteriorhodopsin film in gelatin matrixes which are used as sensitive elements of integrated optic and fibre-optic sensors of various vapor and gases components will not be able to carry out the chemical control of aqueous solutions. In the given
Trikur, I. I., I. I. Trikur, Sichka, M. Y., D. H. Yang, Y. P. Sharkan, M. Y. Sichka, Yang, D. H., J. J. Ramsden, S. W. Lee, Lee, Seung-Woo, S. O. Korposh, Sharkan, Y. P., Ramsden, Jeremy J., Korposh, Sergiy   +13 more
core   +1 more source