Results 81 to 90 of about 17,342 (214)

Chromophore motion during the bacteriorhodopsin photocycle: polarized absorption spectroscopy of bacteriorhodopsin and its M-state in bacteriorhodopsin crystals. [PDF]

The EMBO Journal, 1991
The three-dimensional crystallization of bacteriorhodopsin was systematically investigated and the needle-shaped crystal form analysed. In these crystals the M-intermediate forms 10 times faster and decays 15 times more slowly than in purple membranes. Polarized absorption spectra of the crystals were measured in the dark and light adapted states.
Schertler, G., Lozier, R., Michel, H. ; https://orcid.org/0000-0003-4351-7846, Oesterhelt, D.   +3 more
openaire   +3 more sources

Carbon Contacts to Proteins Enable Robust, Biocompatible Electronic Junctions with Near‐Activation‐less Conduction Down to 10 K

Advanced Functional Materials, Volume 36, Issue 31, 16 April 2026.
A robust solid‐state protein junction with a semi‐transparent eC/Au electrode allows photoexcitation of the bacterio‐rhodopsin, bR layer, to isomerize the bR retinal. The resulting photo‐response shows the protein is functional in the solid‐state junction.
Shailendra K. Saxena, Sudipta Bera, Tatyana Bendikov, Israel Pecht, Mordechai Sheves, David Cahen   +5 more
wiley   +1 more source

Ionic Polymer Microactuator Activated by Photoresponsive Organic Proton Pumps

Actuators, 2015
An ionic polymer microactuator driven by an organic photoelectric proton pump transducer is described in this paper. The light responsive transducer is fabricated by using molecular self-assembly to immobilize oriented bacteriorhodopsin purple membrane ...
Khaled M. Al-Aribe, George K. Knopf, Amarjeet S. Bassi   +2 more
doaj   +1 more source

A New Era for Using Natural Pigments: The Case of the C50 Carotenoid Called Bacterioruberin

Biotechnology and Applied Biochemistry, Volume 73, Issue 2, Page 913-926, April 2026.
ABSTRACT Haloarchaea are extremophilic microorganisms belonging to the Archaea domain that require high salt concentrations to live, thus inhabiting ecosystems like salty ponds, salty marshes, or extremely salty lagoons. They are more abundant and widely distributed worldwide than initially expected.
Micaela Giani, Elena Valdés, José María Miralles‐Robledillo, Guillermo Martínez, Carmen Pire, Rosa María Martínez‐Espinosa   +5 more
wiley   +1 more source

Photo‐Modulated Proton Transport in Merocyanine Metastable‐State Photoacid Based Polymers

Small, Volume 22, Issue 23, 22 April 2026.
The covalent incorporation of merocyanine metastable‐state photoacid into soft polymers imparts conductivity to otherwise insulating matrices, allowing light‐triggered control of charge and structure, offering a new platform for photo‐responsive, ion‐conducting materials.
Gianni Pacella, Mira Kim, Rachael Hannah, Ryan C. Chiechi, Shirin Faraji, Giuseppe Portale   +5 more
wiley   +1 more source

Precise Capture of Membrane Proteins Using DNA‐Origami‐Constrained Nanodiscs

Small Structures, Volume 7, Issue 4, April 2026.
A designed DNA origami structure ensures manipulates and inserts an individual membrane protein in a single, captured nanodisc. Membrane proteins play a key role as cellular gatekeepers, regulating the flow of information and material across lipid membranes.
Piotr Stepien, Gerrit Wilkens, Sylwia Swiatek, Manuel Yusef Robles, Anna Swietlikowska, Sarah Hutchings, Dmitry Ghilarov, Jonathan G. Heddle   +7 more
wiley   +1 more source

Comparative analysis of canonical and noncanonical rhodopsins in Amphidinium carterae and Karlodinium veneficum

Journal of Phycology, Volume 62, Issue 2, Page 360-376, April 2026.
Abstract Rhodopsins are ancient and versatile light‐sensitive proteins, widely distributed across microbial life. In dinoflagellates, however, their diversity and function remain poorly understood, owing to the lineage's extreme genomic divergence. Here, we surveyed the rhodopsin complements of two dinoflagellates, Amphidinium carterae and Karlodinium ...
Jens Wira, Miranda Judd, Anne Baldino, Tsvetan Bachvaroff, Allen R. Place   +4 more
wiley   +1 more source

Photoenergy transduction in halobacterium halobium [PDF]

The structure and function of a rhodopsin-like pigment bacteriorhodopsin, discovered and isolated from the membranes of the halophile Halobacterium halobium, were studied.
Bogomolni, R. A., Stoeckenius, W.
core   +1 more source

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

Advanced 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, Noah Ritzmann, Zöhre Ucurum, Daniel J. Müller, Dimitrios Fotiadis   +4 more
doaj   +1 more source

Versatile Protein-A Coated Photoelectric Immunosensors with a Purple-Membrane Monolayer Transducer Fabricated by Affinity-Immobilization on a Graphene-Oxide Complexed Linker and by Shear Flow

Sensors, 2018
Bacteriorhodopsin-embedded purple membranes (PM) have been demonstrated to be a sensitive photoelectric transducer for microbial detection. To efficiently prepare versatile BR-based immunosensors with protein A as antibody captures, a large, high ...
Hsueh-Hsia Wu, Xin-Quan Liao, Xin-Ying Wu, Cheng-De Lin, Kai-Ru Jheng, Hong-Ren Chen, Yong-Yi Wang, Hsiu-Mei Chen   +7 more
doaj   +1 more source