Results 101 to 110 of about 634,170 (178)

Spectroscopic Characterization of Atypical Ion Pumping Microbial Rhodopsins [PDF]

, 2020
Microbial rhodopsins are seven transmembrane α-helical proteins with a retinal cofactor which affords the sensitivity to a broad spectrum of visible light and provides the driving energy needed for transport.
Harris, Andrew
core   +1 more source

Xenorhodopsins, an enigmatic new class of microbial rhodopsins horizontally transferred between archaea and bacteria

Biology Direct, 2011
Based on unique, coherent properties of phylogenetic analysis, key amino acid substitutions and structural modeling, we have identified a new class of unusual microbial rhodopsins related to the Anabaena sensory rhodopsin (ASR) protein, including ...
Ugalde Juan A, Podell Sheila, Narasingarao Priya, Allen Eric E   +3 more
doaj   +1 more source

Microbial Rhodopsins in Optogenetics [PDF]

Microbial rhodopsins are a family of photochemically reactive proteins found in prokaryotes and lower eukaryotes in a variety of habitats. Like the rhodopsins in animal vision, microbial rhodopsins have seven transmembrane helices that form a pocket ...
Kersten, Elise
core  

Structural basis for the prolonged photocycle of sensory rhodopsin II revealed by serial synchrotron crystallography

Nature Communications
Microbial rhodopsins form a diverse family of light-sensitive seven-transmembrane helix retinal proteins that function as active proton or ion pumps, passive light-gated ion channels, and photosensors.
Robert Bosman, Giorgia Ortolani, Swagatha Ghosh, Daniel James, Per Norder, Greger Hammarin, Tinna Björg Úlfarsdóttir, Lucija Ostojić, Tobias Weinert, Florian Dworkowski, Takashi Tomizaki, Jörg Standfuss, Gisela Brändén, Richard Neutze   +13 more
doaj   +1 more source

Enhancement of the Long-Wavelength Sensitivity of Optogenetic Microbial Rhodopsins by 3,4-Dehydroretinal

, 2016
Electrogenic microbial rhodopsins (ion pumps and channelrhodopsins) are widely used to control the activity of neurons and other cells by light (optogenetics).
Oleg A. Sineshchekov (2077264), Jihong Wang (2077267), Elena G. Govorunova (249680), John L. Spudich (1324128)   +3 more
core   +1 more source

Bidirectional Optical Control of Proton Motive Force in Escherichia coli Using Microbial Rhodopsins [PDF]

Proton (H+) motive force (PMF) serves as the energy source for the flagellar motor rotation, crucial for microbial motility. Here, to control PMF using light, we introduced light-driven inward and outward proton pump rhodopsins, RmXeR and AR3, into ...
Nakanishi, Kotaro, Sudo, Yuki, Sowa, Yoshiyuki, Kojima, Keiichi   +3 more
core   +1 more source

Rhodopsin charge diffusion computations disclose contrasting color-tuning mechanisms

Nature Communications
Our understanding of the rules controlling the spectral tuning of light absorbing proteins is limited. When looking at rhodopsins as canonical examples, the fact that the cavity incorporates the chromophore counterion in different positions and polar ...
Filippo Sacchetta, Xuchun Yang, Massimo Olivucci   +2 more
doaj   +1 more source

Bacterial utilization of light: rhodopsins and carotenoids

, 2016
Maresca, Julia A.Sunlight is the most abundant and sustainable resource of energy available. Organisms that can use sunlight for phototrophy fall into two categories: photoautotrophs and photoheterotrophs.
Miller, Kelsey J.
core   +1 more source

A subgroup of light-driven sodium pumps with an additional Schiff base counterion

Nature Communications
Light-driven sodium pumps (NaRs) are unique ion-transporting microbial rhodopsins. The major group of NaRs is characterized by an NDQ motif and has two aspartic acid residues in the central region essential for sodium transport.
E. Podoliak, G. H. U. Lamm, E. Marin, A. V. Schellbach, D. A. Fedotov, A. Stetsenko, M. Asido, N. Maliar, G. Bourenkov, T. Balandin, C. Baeken, R. Astashkin, T. R. Schneider, A. Bateman, J. Wachtveitl, I. Schapiro, V. Busskamp, A. Guskov, V. Gordeliy, A. Alekseev, K. Kovalev   +20 more
doaj   +1 more source

Optogenetic manipulation of neuronal and cardiomyocyte functions in zebrafish using microbial rhodopsins and adenylyl cyclases. [PDF]

Elife, 2023
Hagio H, Koyama W, Hosaka S, Song AD, Narantsatsral J, Matsuda K, Shimizu T, Hososhima S, Tsunoda SP, Kandori H, Hibi M.   +10 more
europepmc   +1 more source