Results 31 to 40 of about 1,651 (181)

structure and mechanism of a light-gated cation channel [PDF]

open access: yes, 2014
The new and vibrant field of optogenetics was founded by the seminal discovery of channelrhodopsin, the first light-gated cation channel. Despite the numerous applications that have revolutionised neurophysiology, the functional mechanism is far from ...
Heberle, Joachim   +1 more
core   +1 more source

Photochemical reaction of bacteriorhodopsin

open access: yesFEBS Letters, 1976
Halobacterium halobium utilizes light both as a stimulus for phototaxis [l] and as an energy source for creating a proton gradient across the cell membrane which in turn produces ATP [2] . The photoreceptive pigment of this bacterium was first investigated by Oesterhelt and Stoeckenius [3] who showed that it is the only protein lying in so-called ...
Tokunaga, Fumio   +2 more
openaire   +2 more sources

Diversity and Evolution of Sensor Histidine Kinases in Eukaryotes [PDF]

open access: yes, 2019
Histidine kinases (HKs) are primary sensor proteins that act in cell signaling pathways generically referred to as "two component systems" (TCSs). TCSs are among the most widely distributed transduction systems used by both prokaryotic and eukaryotic ...
Akiyoshi   +172 more
core   +5 more sources

GRKs and arrestins: Nomenclature and functions in GPCR‐dependent and ‐independent signalling

open access: yesBritish Journal of Pharmacology, Volume 183, Issue 11, Page 2619-2633, June 2026.
G protein‐coupled receptor (GPCR) kinases (GRKs) and arrestins play a critical role in the regulation of GPCR signalling. Historic names of mammalian GRKs were replaced by systematic ones in the 1990s; however, both kinds of names are currently in use for mammalian arrestins.
Vsevolod V. Gurevich
wiley   +1 more source

Metagenomic Insights into the Phylogenetic and Metabolic Diversity of the Prokaryotic Community Dwelling in Hypersaline Soils from the Odiel Saltmarshes (SW Spain) [PDF]

open access: yes, 2018
Hypersaline environments encompass aquatic and terrestrial habitats. While only a limited number of studies on the microbial diversity of saline soils have been carried out, hypersaline lakes and marine salterns have been thoroughly investigated ...
Ventosa Ucero, Antonio   +1 more
core   +2 more sources

Meniscus‐Mediated Imaging of Soft Biological Membranes Using 200 kN/m Ultra‐Stiff 15 MHz MEMS AFM Probes

open access: yesJournal of Molecular Recognition, Volume 39, Issue 3, May 2026.
ABSTRACT Coronaviruses, among other membrane‐enveloped viruses, can remain infectious on surfaces in ambient air for days. Many bacteria and fungi also expose their plasma membranes to air environments. Key survival strategies in air include hydrophobic coatings to prevent water loss and waxy or silica‐based resistant cell walls.
Suyambulingam Subramanian   +3 more
wiley   +1 more source

Protein Activity of the Fusarium fujikuroi Rhodopsins CarO and OpsA and Their Relation to Fungus–Plant Interaction [PDF]

open access: yes, 2018
Fungi possess diverse photosensory proteins that allow them to perceive different light wavelengths and to adapt to changing light conditions in their environment.
Alexander Adam   +7 more
core   +2 more sources

Electrons and X‐rays for diffraction and imaging

open access: yesActa Crystallographica Section D, Volume 82, Issue 5, Page 446-456, May 2026.
The use of X‐rays and electrons for diffraction and imaging of soft biological samples is compared.A comparison is provided between the use of electrons and X‐rays for collecting diffraction data from small protein crystals and imaging data from cells and tissues.
Colin Nave   +2 more
wiley   +1 more source

Chromophore equilibria in bacteriorhodopsin

open access: yesBiophysical Journal, 1979
An investigation of the dark equilibria between different chromophores of bacteriorhodopsin (BR) and studies of the kinetics of their interconversion and photochemical activity have led to the following conclusions. (a) A component of the 605-nm chromophore of BR decays in the millisecond range and is likely to be identical to the intermediate O of the
Fischer, U., Oesterhelt, D.
openaire   +2 more sources

Photochemisch strukturierte computergenerierte Hologramme in Bakteriorhodopsin-Schichten [PDF]

open access: yes, 2005
Ziel dieser Dissertation ist die Untersuchung des photochemischen Aufzeichungsprozesses von computergenerierte Hologrammen (CGH's) innerhalb des Biomaterials Bakteriorhodopsin (BR).
Guessous, Fouad   +1 more
core   +1 more source

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