Results 21 to 30 of about 30,370 (300)
Annual Review of Physiology, 1999 ▪ Abstract Fourier transform infrared and Raman spectroscopy, solid-state NMR, and X-ray crystallography have contributed detailed information about the structural changes in the proton transport cycle of the light-driven pump, bacteriorhodopsin. The results over the past few years add up to a step-by-step description of the configurational changes ...
J K, Lanyi, H, Luecke
openaire +5 more sources
PLoS ONE, 2014 We theoretically and experimentally analyze the formation of thick Purple Membrane (PM) polyacrylamide (PA) films by means of optical spectroscopy by considering the absorption of bacteriorhodopsin and scattering.
María Gomariz +3 more
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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 +7 more
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Proton uptake mechanism in bacteriorhodopsin captured by serial synchrotron crystallography
Science, 2019 Refilling the proton pump Proteins are dynamic. Rearrangements of side chains, secondary structure, and entire domains gate functional transitions on time scales ranging from picoseconds to milliseconds. Weinert et al.
T. Weinert +12 more
semanticscholar +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 +5 more
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Collective exchange processes reveal an active site proton cage in bacteriorhodopsin [PDF]
, 2020 Proton translocation across membranes is vital to all kingdoms of life. Mechanistically, it relies on characteristic proton flows and modifications of hydrogen bonding patterns, termed protonation dynamics, which can be directly observed by fast magic ...
Brünig, Florian N. +5 more
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Femtosecond spectroscopy of the first events of the photochemical cycle in bacteriorhodopsin [PDF]
, 1985 The first steps in the photochemistry of bacteriorhodopsin (BR) are investigated with light pulses of 160 fs duration. Four samples are studied: (i) the purple membrane, (ii) deuterated purple membrane, (iii) BR trimers and (iv) BR monomers.
Kaiser, Wolfgang +4 more
core +1 more source
Journal of Physical Chemistry Letters, 2019 Bacteriorhodopsin is a prototypical photoreceptor protein that functions as a light-driven proton pump. The retinal chromophore of bacteriorhodopsin undergoes C13═C14 trans-to-cis isomerization upon photoexcitation, and it has been believed to be the ...
Shinya Tahara +3 more
semanticscholar +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
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Advanced Electronic Materials, 2023 Four conjugated polymers are integrated with a bacteriorhodopsin D94N‐HmBRI in organic field‐effect transistors (OFETs) with the device architecture of doped Si bottom gate/SiO2 bottom electric/semiconducting polymer/Au electrodes/D94N‐HmBRI top ...
Pei‐Yu Chen +4 more
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