Results 61 to 70 of about 30,370 (300)

Light Sensor Platform Based on the Integration of Bacteriorhodopsin with a Single Electron Transistor

open access: yesActive and Passive Electronic Components, 2011
This paper reports on the integration of an optical protein with single electron transistors to form a nano-bio-hybrid device for sensing. Bacteriorhodopsin (bR) is an optoelectric protein that translocates a proton across a distance of several ...
Karl A. Walczak   +2 more
doaj   +1 more source

Osmotic shock induces the presence of glycocardiolipin in the purple membrane of Halobacterium salinarum

open access: yesJournal of Lipid Research, 2003
In the purple membrane (PM) of Halobacterium salinarum is present a phospholipid dimer consisting of sulfo-triglycosyl-diether (S-TGD-1) esterified to the phosphate group of phosphatidic acid (PA), i.e., S-TGD-1-PA, called glycocardiolipin (GlyC ...
Simona Lobasso   +3 more
doaj   +1 more source

Investigations on the electrical current-voltage response in protein light receptors

open access: yes, 2014
We report a theoretical/computational approach for modeling the current-voltage characteristics of sensing proteins. The modeling is applied to a couple of transmembrane proteins, bacteriorhodopsin and proteorhodopsin, sensitive to visible light and ...
Alfinito, E, Pousset, J, Reggiani, L
core   +1 more source

Charge transport in purple membrane monolayers: A sequential tunneling approach

open access: yes, 2011
Current voltage (I-V) characteristics in proteins can be sensitive to conformational change induced by an external stimulus (photon, odour, etc.). This sensitivity can be used in medical and industrial applications besides shedding new light in the ...
Alfinito, Eleonora   +2 more
core   +1 more source

Photoreceptors for a light biotransducer: a comparative study of the electrical responses of two (type-1)-opsins

open access: yes, 2013
The increasing interest in photoactivated proteins as natural replacement of standard inorganic materials in photocells drives to the compared analysis of bacteriorhodopsin and proteorhodopsin, two widely diffused proteins belonging to the family of ...
Alfinito, E   +3 more
core   +1 more source

A General control mechanism of energy flow in the excited state of polyenic biochromophores. [PDF]

open access: yes, 2011
Quantum dynamics in photobiology is a highly controversial subject of modern research. In particular, the role of low-frequency vibrational coherence of biochromophores has been intensely discussed.
Abramavicius   +44 more
core   +1 more source

Opsin vs opsin: new materials for biotechnological applications

open access: yes, 2014
The need of new diagnostic methods satisfying, as an early detection, a low invasive procedure and a cost-efficient value, is orienting the technological research toward the use of bio-integrated devices, in particular bio-sensors.
Alfinito, E., Reggiani, L.
core   +1 more source

Electrons and X‐rays for diffraction and imaging

open access: yesActa Crystallographica Section D, EarlyView.
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

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

Bacteriorhodopsin–ZnO hybrid as a potential sensing element for low-temperature detection of ethanol vapour

open access: yesBeilstein Journal of Nanotechnology, 2016
Zinc oxide (ZnO) and bacteriorhodopsin (bR) hybrid nanostructures were fabricated by immobilizing bR on ZnO thin films and ZnO nanorods. The morphological and spectroscopic analysis of the hybrid structures confirmed the ZnO thin film/nanorod growth and ...
Saurav Kumar   +7 more
doaj   +1 more source

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