Results 91 to 100 of about 5,006 (168)

Investigating the mechanical aspects of the bacteriorhodopsin photocycle

, 2003
A retinal protein complex known as bacteriorhodopsin was investigated by atomic force microscopy to determine whether it possessed qualities that make it favorable for use as a nanoscale actuator or sensor. Bacteriorhodopsin was tested in different forms
Waddell, Jack Neel
core   +3 more sources

Electric-field induced pK-changes in bacteriorhodopsin [PDF]

, 1981
Tsuji K, Neumann E. Electric-field induced pK-changes in bacteriorhodopsin. FEBS Letters.
Kinko Tsuji, Tsuji, Kinko, Eberhard Neumann, Neumann, Eberhard   +3 more
core   +1 more source

Bacteriorhodopsin Folds through a Poorly Organized Transition State [PDF]

, 2014
The folding mechanisms of helical membrane proteins remain largely uncharted. Here we characterize the kinetics of bacteriorhodopsin folding and employ φ-value analysis to explore the folding transition state.
Woodall, Nicholas B, Park, Chiwook, Schlebach, Jonathan P, Bowie, James U   +3 more
core   +1 more source

Isolation of Squarebop I bacteriorhodopsin from biomass of coastal salterns

, 2012
Squarebop I bacteriorhodopsin is a light-activated proton pump present in the membranes of the archeon Haloquadratum walsbyi, a square-shaped organism representing 50-60% of microbial population in the crystallizer ponds of the coastal salterns.
CORCELLI, Angela, Angelini R., LOPALCO, PATRIZIA, AGOSTIANO, Angela, Laera G., Pollice A., LOBASSO, SIMONA, Milano F.   +7 more
core   +1 more source

Electrostatics and electrodynamics of bacteriorhodopsin

Biophysical Journal, 1996
The stationary electric dichroism of bacteriorhodopsin is in qualitative, but not quantitative, agreement with the orientation function for disks having a permanent dipole directed perpendicular to the plane and an induced dipole in the plane. Fits of the orientation function to data measured at low field strengths demonstrate: an increase of the ...
openaire   +3 more sources

Photoreactions of bacteriorhodopsin at acid pH [PDF]

, 1989
It has been known that bacteriorhodopsin, the retinal protein in purple membrane which functions as a light-driven proton pump, undergoes reversible spectroscopic changes at acid pH.
Lanyi, J.K., Váró, G.
core   +1 more source

Lipidic cubic phase injector is a viable crystal delivery system for time-resolved serial crystallography

Nature Communications, 2016
Serial femtosecond crystallography using X-ray free-electron lasers has huge potential for time-resolved structural experiments. Here, the authors present a structure of the light-driven proton pump bacteriorhodopsin using these techniques.
Przemyslaw Nogly, Valerie Panneels, Garrett Nelson, Cornelius Gati, Tetsunari Kimura, Christopher Milne, Despina Milathianaki, Minoru Kubo, Wenting Wu, Chelsie Conrad, Jesse Coe, Richard Bean, Yun Zhao, Petra Båth, Robert Dods, Rajiv Harimoorthy, Kenneth R. Beyerlein, Jan Rheinberger, Daniel James, Daniel DePonte, Chufeng Li, Leonardo Sala, Garth J. Williams, Mark S. Hunter, Jason E. Koglin, Peter Berntsen, Eriko Nango, So Iwata, Henry N. Chapman, Petra Fromme, Matthias Frank, Rafael Abela, Sébastien Boutet, Anton Barty, Thomas A. White, Uwe Weierstall, John Spence, Richard Neutze, Gebhard Schertler, Jörg Standfuss   +39 more
doaj   +1 more source

Photoactive bacteriorhodopsin variants

, 1997
Bacteriorhodopsin variants were generated by UV mutagenesis. The protein variants thus engineered were characterized for their UV-visible absorption, light induced proton release activity and photocycle kinetics (BR→M)
Singh, Anil K., Pavale, Hanmant M., Majumdar, Nirmalya   +2 more
core   +1 more source

Mixed Potential Energy Surfaces of the Ultrafast Isomerization of Retinal in Bacteriorhodopsin

EPJ Web of Conferences, 2013
We observe, using electronic two-dimensional photon echo spectroscopy, that the cis and trans potential energy surfaces of the ultrafast isomerization of retinal in bacteriorhodopsin are mixed via the hydrogen out of plane (HOOP) mode.
Prokhorenko Valentyn I., Morizumi Takefumi, Halpin Alexei, Johnson Philip J. M., Ernst Oliver P., Dwayne Miller R. J.   +5 more
doaj   +1 more source

Orientation of non-spherical protonated water clusters revealed by infrared absorption dichroism

Nature Communications, 2018
Protein-bound water clusters play a key role for proton transport and storage in molecular biology. Here, the authors show by simulations and experiments that the orientation of non-spherical protonated water clusters in bacteriorhodopsin is unveiled by ...
Jan O. Daldrop, Mattia Saita, Matthias Heyden, Victor A. Lorenz-Fonfria, Joachim Heberle, Roland R. Netz   +5 more
doaj   +1 more source