Results 81 to 90 of about 29,478 (285)

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

Stimuli‐Responsive Chemical Systems That Mimic Biological Dynamics

open access: yesChemistry – A European Journal, Volume 32, Issue 1, 2 January 2026.
Chemists are designing synthetic systems that mimic life's dynamic behaviors, such as motion, sensing, adaptation, and compartmentalization, by integrating reaction networks with stimuli like light, pH, and chemical fuels. This mini‐review surveys molecular machines, responsive materials, nucleic acid networks, and artificial cells, highlighting how ...
Antonio Aguanell   +3 more
wiley   +1 more source

Light Color‐Controlled pH‐Adjustment of Aqueous Solutions Using Engineered Proteoliposomes

open access: yesAdvanced Science
Controlling the pH at the microliter scale can be useful for applications in research, medicine, and industry, and therefore represents a valuable application for synthetic biology and microfluidics.
Daniel Harder   +4 more
doaj   +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

Interferometry of hyper-Rayleigh scattering by inhomogeneous thin films [PDF]

open access: yes, 1999
The use of specific symmetry properties of the optical second-harmonic generation (the s,s-exclusion rule) has allowed us to observe high-contrast hyper-Rayleigh interference patterns in a completely diffuse light - an effect having no analog in case of ...
A. A. Fedyanin   +12 more
core   +2 more sources

Bi‐Functional Topospecific Nanoparticles to Promote Immune‐Tumor Cell Engagement as A New Immunotherapeutic Strategy

open access: yesAdvanced Materials, Volume 38, Issue 2, 8 January 2026.
A Janus‐engineered nanoplatform (J‐pHLIP‐PD1), featuring separate tumor‐ and immune‐targeting faces, bridges melanoma cells and cytotoxic T lymphocytes using toposelective pHLIP and anti‐PD‐1 presentation. This strategy elicits robust antitumor responses, promotes immunogenic tumor cell death, suppresses lung metastasis in vivo, and provides a modular,
Alba Ortuño‐Bernal   +9 more
wiley   +1 more source

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

Ion Transport of Biohybrid Asymmetric Membranes by pH and Light‐Cooperative Modulation

open access: yesAdvanced Materials Interfaces, 2020
Bacteriorhodopsin (bR) is an excellent light‐driven proton pump and plays a vital role in chemical and biological analytical processes, such as maintaining osmotic balance, intracellular acidity, and participating in photosynthesis.
Yujia Lv   +3 more
doaj   +1 more source

Cryo-EM structures of the channelrhodopsin ChRmine in lipid nanodiscs

open access: yesNature Communications, 2022
ChRmine is a bacteriorhodopsin-like cation channelrhodopsin (BCCR). Here, the authors present cryo-EM structures of ChRmine in apo- and retinal-bound forms to provide insight into channel activity in a BCCR and facilitate engineering of ChRmine-based ...
Kyle Tucker   +3 more
doaj   +1 more source

Probing Saltern Brines with an Oxygen Electrode: What Can We Learn about the Community Metabolism in Hypersaline Systems?

open access: yesLife, 2016
We have explored the use of optical oxygen electrodes to study oxygenic photosynthesis and heterotrophic activities in crystallizer brines of the salterns in Eilat, Israel.
Aharon Oren
doaj   +1 more source

Home - About - Disclaimer - Privacy