Results 71 to 80 of about 30,370 (300)

PEDOT-Carbon Nanotube Counter Electrodes and Bipyridine Cobalt (II/III) Mediators as Universally Compatible Components in Bio-Sensitized Solar Cells Using Photosystem I and Bacteriorhodopsin [PDF]

open access: gold, 2022
Alexandra H. Teodor   +11 more
openalex   +1 more source

Optical picosecond studies of bacteriorhodopsin containing a sterically fixed retinal [PDF]

open access: yes, 1984
The photochemical behaviour of an analogous bacteriorhodopsin (9,12-Ph-BR) which contains the sterically fixed 9,12-phenylretinal has been investigated with picosecond spectroscopy. The following results have been obtained.
Franz, M. A.   +5 more
core   +1 more source

Damage‐limited resolution for X‐ray and electron microscopy of organic specimens

open access: yesActa Crystallographica Section D, EarlyView.
Analytical expressions for the damage‐limited resolution are developed and applied to X‐ray and electron imaging of beam‐sensitive specimens. The findings will guide future microscopy and instrument design.Analytical expressions for the damage‐limited resolution (DLR) are developed and applied to X‐ray and electron imaging of beam‐sensitive specimens ...
Ray F. Egerton, Colin Nave
wiley   +1 more source

Direct and Label-Free Determination of Human Glycated Hemoglobin Levels Using Bacteriorhodopsin as the Biosensor Transducer

open access: yesSensors, 2020
Glycated hemoglobin (HbA1c) levels are an important index for the diagnosis and long-term control of diabetes. This study is the first to use a direct and label-free photoelectric biosensor to determine HbA1c using bacteriorhodopsin-embedded purple ...
Ying-Chin Lin   +8 more
doaj   +1 more source

Detailed analysis of distorted retinal and its interaction with surrounding residues in the K intermediate of bacteriorhodopsin

open access: yesCommunications Biology, 2023
Crystal structures and quantum mechanical calculations reveal the interaction and photoisomerized conformation of the retinal chromophore in the K intermediate of bacteriorhodopsin (bR), giving insights into light-driven bR proton pumping.
Shoun Taguchi   +7 more
doaj   +1 more source

Mapping the effects of specific radiation damage and solvent radiolysis in buffers and crystals with online UV–Vis absorption spectroscopy

open access: yesActa Crystallographica Section D, EarlyView.
Radiation‐induced changes during X‐ray crystallographic data collection can compromise concurrent spectroscopic studies. Suitable protocols to detect and identify spectral artefacts from crystallization buffers and cryoprotectants are essential for the reliable analysis of chromophoric ligands in macromolecules.Online UV–Vis absorption spectroscopy is ...
Jack Stubbs   +8 more
wiley   +1 more source

Hybrid retinoid analogs as instruments for the nanobiophotonic researches

open access: yesТонкие химические технологии, 2011
This mini-review presents experimental data obtained by the authors in the context of a cycle of structural-functional research on bionanophotochrome bacteriorhodopsin carried out during the past 10 years.
A. A. Khodonov   +8 more
doaj  

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

open access: yesBritish Journal of Pharmacology, EarlyView.
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

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

The Conformational Switches of a Bacterial Light‐Driven Sodium Pump Characterized by Time‐Resolved Resonance Raman Spectroscopy

open access: yesChemPhysChem, Volume 27, Issue 7, 14 April 2026.
The microbial retinal protein KR2 (Krokinobacter eikastus) is a light‐driven outward Na+ pump, which is coupled to the photocycle of the chromophore. Using time‐resolved continuous‐wave pump‐probe resonance Raman spectroscopy, the operational switches for ion transport are identified, which are the transitions to a specific Schiff base sub‐state and ...
Anna Lena Schäfer   +5 more
wiley   +1 more source

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