Results 51 to 60 of about 29,478 (285)

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.
Csilla Gergely, Fabio Antonio Bovino, Gyorgy Varo, LARCIPRETE, Maria Cristina, Leahu Gregory, LEAHU, GRIGORE, SIBILIA, Concetta   +6 more
core   +3 more sources

Chromophore motion during the bacteriorhodopsin photocycle: polarized absorption spectroscopy of bacteriorhodopsin and its M-state in bacteriorhodopsin crystals. [PDF]

The EMBO Journal, 1991
The three-dimensional crystallization of bacteriorhodopsin was systematically investigated and the needle-shaped crystal form analysed. In these crystals the M-intermediate forms 10 times faster and decays 15 times more slowly than in purple membranes. Polarized absorption spectra of the crystals were measured in the dark and light adapted states.
Schertler, G., Lozier, R., Michel, H. ; https://orcid.org/0000-0003-4351-7846, Oesterhelt, D.   +3 more
openaire   +3 more sources

Isolation and Taxonomic Characterization of Novel Haloarchaeal Isolates From Indian Solar Saltern: A Brief Review on Distribution of Bacteriorhodopsins and V-Type ATPases in Haloarchaea

Frontiers in Microbiology, 2020
Haloarchaea inhabit high salinity environments worldwide. They are a potentially rich source of crucial biomolecules like carotenoids and industrially useful proteins.
Dipesh Kumar Verma, Chetna Chaudhary, Latika Singh, Chandni Sidhu, Busi Siddhardha, Senthil E. Prasad, Krishan Gopal Thakur   +6 more
doaj   +1 more source

Charge transport in purple membrane monolayers: A sequential tunneling approach

, 2011
Current voltage (I-V) characteristics in proteins can be sensitive to conformational change induced by an external stimulus (photon, odour, etc.). This sensitivity can be used in medical and industrial applications besides shedding new light in the ...
Alfinito, Eleonora, Millithaler, Jean-Francois, Reggiani, Lino   +2 more
core   +1 more source

Active Membrane Fluctuations Studied by Micropipet Aspiration [PDF]

, 2001
We present a detailed analysis of the micropipet experiments recently reported in J-B. Manneville et al., Phys. Rev. Lett. 82, 4356--4359 (1999), including a derivation of the expected behaviour of the membrane tension as a function of the areal strain ...
A. N. Radionov, A. Royant, A.G. Petrov, D. Oesterhelt, E. Boroske, E. Evans, E. Evans, E. Pebay-Peyroula, F. Dumas, F. Faucon, F. Maingret, F. Maingret, G. Niggemann, H. J. Sass, H. Luecke, H. Luecke, J-B. Manneville, J. Heberle, J. Heberle, J. K. Lanyi, J. Prost, J. Prost, J. Prost, J.-B. Manneville, J.-L. Rigaud, M. Bloom, M. Bloom, M. I. Angelova, M. Jansen, M. Kummrow, M. M. Speretto, M. Seigneuret, M. Seigneuret, N. A. Dencher, O. G. Mouritsen, P. Bassereau, P. Méléard, Ph. Méléard, R. Henderson, R. Kwok, R. Lawaczeck, R. Lipowsky, S. Ramaswamy, S. Ramaswamy, S. Ramaswamy, S. Subramaniam, S. Subramaniam, T. Kouyama, U. Haupts, W. Helfrich, W. Kuhlbrandt, Y. Cao, Y. Kimura   +52 more
core   +2 more sources

Carbon Contacts to Proteins Enable Robust, Biocompatible Electronic Junctions with Near‐Activation‐less Conduction Down to 10 K

Advanced Functional Materials, EarlyView.
A robust solid‐state protein junction with a semi‐transparent eC/Au electrode allows photoexcitation of the bacterio‐rhodopsin, bR layer, to isomerize the bR retinal. The resulting photo‐response shows the protein is functional in the solid‐state junction.
Shailendra K. Saxena, Sudipta Bera, Tatyana Bendikov, Israel Pecht, Mordechai Sheves, David Cahen   +5 more
wiley   +1 more source

Maximum Entropy Production Theorem for Transitions between Enzyme Functional States and Its Applications

Entropy, 2019
Transitions between enzyme functional states are often connected to conformational changes involving electron or proton transport and directional movements of a group of atoms.
Davor Juretić, Juraj Simunić, Željana Bonačić Lošić   +2 more
doaj   +1 more source

Early evolution of purple retinal pigments on Earth and implications for exoplanet biosignatures

, 2018
We propose that retinal-based phototrophy arose early in the evolution of life on Earth, profoundly impacting the development of photosynthesis and creating implications for the search for life beyond our planet.
DasSarma, Shiladitya, Schwieterman, Edward W.   +1 more
core   +1 more source

Structure and functional motifs of GCR1, the only plant protein with a GPCR fold? [PDF]

, 2013
Whether GPCRs exist in plants is a fundamental biological question. Interest in deorphanizing new G protein coupled receptors (GPCRs), arises because of their importance in signaling.
Abdalla, Nuradin Y, Bailey, Gregory R, Jordon, Sian R D, Reeves, Philip J, Reynolds, Christopher A, Taddese, Bruck, Upton, Graham J G   +6 more
core   +1 more source

A New Era for Using Natural Pigments: The Case of the C50 Carotenoid Called Bacterioruberin

Biotechnology and Applied Biochemistry, EarlyView.
ABSTRACT Haloarchaea are extremophilic microorganisms belonging to the Archaea domain that require high salt concentrations to live, thus inhabiting ecosystems like salty ponds, salty marshes, or extremely salty lagoons. They are more abundant and widely distributed worldwide than initially expected.
Micaela Giani, Elena Valdés, José María Miralles‐Robledillo, Guillermo Martínez, Carmen Pire, Rosa María Martínez‐Espinosa   +5 more
wiley   +1 more source