Results 11 to 20 of about 1,127 (123)

Let There be Light! Light as an Engine and Regulator in Synthetic Cells. [PDF]

Angew Chem Int Ed Engl
Cells are out‐of‐equilibrium systems that regulate their spatiotemporal features. In biomimetic synthetic cells, light offers a unique way for energizing and regulating events in space and time. This review explores the implementation of light‐responsive tools in synthetic cells to replicate biological functions and enable new bioinspired behaviors ...
Allen ME, Frank S, Louis M, Saha A, Heidari A, Wegner SV.   +5 more
europepmc   +2 more sources

On the Determination of the Transmembrane pH Difference in Bacterial Chromatophores using 9‐Aminoacridine [PDF]

European Journal of Biochemistry, 1974
The extent of hydrogen ion gradient across membranes from photosynthetic bacteria has been determined measuring the energy‐dependent quenching of fluorescence of 9‐aminoacridine in different experimental conditions.Examinations of the absorption or emission spectra of 9‐aminoacridine in aqueous solution reveal an ideal behaviour of this amine up to ...
R, Casadio, A, Baccarini-Melandri, B A, Melandri   +2 more
openaire   +2 more sources

ABSORPTION CHANGES IN BACTERIAL CHROMATOPHORES‐II. A NEW CHLOROPHYLL‐LIKE PIGMENT FROM THE OXIDATION OF CHROMATQPHORES FROM RHODOSPIRILLUM RUBRUM [PDF]

Photochemistry and Photobiology, 1965
Abstract— Evidence is presented which points to (at least) two bound forms of bacteriochlor‐ophyll present in chromatophores of Rhodospirillum rubrum, both of them readily converted to unbound bacteriochlorophyll (abs. max 770 mμ) when the chromatophores are extracted with acetone or ethanol.
Gould, Edwin S, Kuntz, Irwin D, Jr., Calvin, Melvin   +2 more
openaire   +4 more sources

Epigenetics in Captivity: Restoring Wild Phenotypes in Captive‐Reared Salmonids [PDF]

Evol Appl
ABSTRACT Captive rearing is a common practice for the stocking, conservation, and supplementation of fish species worldwide, but captive‐reared fish can exhibit altered phenotypes leading to reduced fitness in nature compared to wild conspecifics. In salmonids, certain studies have found limited genetic differentiation between wild and captive‐reared ...
Attfield T, Honsey A, Ackiss A, Luek A, Meagher B, Nuetzel H, Koch I, April J, Wakeling K, Wellband K, Bouchard R, Lehnert S, Narum S, Healy T, Pitcher T, Venney C.   +15 more
europepmc   +2 more sources

Electrochemical proton gradient and phosphate potential in bacterial chromatophores

FEBS Letters, 1974
One of the obligate and basic requirements of Mitchell’s chemiosmotic hypothesis [ 1 ] is the consistency of the extent of the electrochemical potential difference of protons across the membrane and the amount of energy available for ATP synthesis.
Casadio, Rita, Melandri, Assunta Baccarini, Zannoni, Davide, Melandri, Bruno A.   +3 more
openaire   +2 more sources

ABSORPTION CHANGES IN BACTERIAL CHROMATOPHORES. II. A NEWCHLOROPHYLL-LIKE PIGMENT FROM THE OXIDATION OF CHROMATOPHORES FROMRHODOSPIRILLUM RUBRUM [PDF]

, 1964
Evidence is presented which points to (at least) two bound forms of bacteriochlorophyll present in chromatophores of Rhodospirillum rubrum, both of them readily converted to unbound bacteriochlorophyll (abs. max. 770 mu) when the chromatophores are extracted with acetone or ethanol.
Gould, Edwin S., Kuntz Jr., Irwin D., Calvin, Melvin   +2 more
openaire   +2 more sources

Fish Chromatophores as Cytosensors in a Microscale Device: Detection of Environmental Toxins and Bacterial Pathogens [PDF]

Pigment Cell Research, 2002
Fish chromatophores from Betta splendens are used as the cytosensor element in the development of a portable microscale device capable of detecting certain environmental toxins and bacterial pathogens by monitoring changes in pigment granule distribution.
Frank W R, Chaplen, Rosalyn H, Upson, Philip N, Mcfadden, Wojtek, Kolodziej   +3 more
openaire   +2 more sources

Trehalose as a tool for studying the molecular mechanisms of electron transfer in photosynthetic systems

Frontiers in Photobiology
In this review, we consider the effects of trehalose on charge transfer processes in three distinct photosynthetic systems under different conditions, namely: (i) the effect of relative hydration of the trehalose glassy matrix on forward and backward ...
Mahir Mamedov, Georgy Milanovsky, Liya Vitukhnovskaya, Liya Vitukhnovskaya, Alexey Semenov   +4 more
doaj   +1 more source

The rates of onset of photophosphorylation and of the protonic electrochemical potential difference in bacterial chromatophores [PDF]

FEBS Letters, 1978
We have studied the kinetic and thermodynamic parameters of photophosphorylation in bacterial chromatophores of Rhodopseudomonas capsulata under steady state experimental conditions, as related to the protonic potential difference (Ap) across the membrane [l-4].
Melandri, B.A., de Santis, A., Venturoli, G., Baccarini Melandri, A.   +3 more
openaire   +1 more source

Wave Mechanics of Ciliary Proteins: Quantum‐Enabled Sensing and Energy Transfer in the “Cellular Antenna”

Aggregate, Volume 7, Issue 6, June 2026.
This review surveys eukaryotic cilia as putative quantum‐enabled sensory and regulatory centers. It highlights their multifaceted roles in the cell, focuses on the nontrivial roles of quantum mechanics in their membrane and cytoskeletal proteins, and introduces the essential building blocks enabling quantum properties to survive in the warm, wet, and ...
Daniel L. Bilezikian, Dylan Davidoff, Justin R. Caram, Thomas P. Fay, Aarat P. Kalra, Paul S. Weiss   +5 more
wiley   +1 more source