Results 41 to 50 of about 1,651 (181)

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

Acta Crystallographica Section D, Volume 82, Issue 5, Page 471-483, May 2026.
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

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

Acta Crystallographica Section D, Volume 82, Issue 5, Page 504-515, May 2026.
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, Nicolas Caramello, Matthew J. Rodrigues, Sylvain Engilberge, Eric Mathieu, Samuel L. Rose, Gwyndaf Evans, Antoine Royant, Ivo Tews   +8 more
wiley   +1 more source

The physics of pulling polyproteins: a review of single molecule force spectroscopy using the AFM to study protein unfolding. [PDF]

, 2016
One of the most exciting developments in the field of biological physics in recent years is the ability to manipulate single molecules and probe their properties and function.
Dougan, L, Hughes, ML
core   +1 more source

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

ChemPhysChem, 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, Arita Silapetere, Peter Hegemann, Katrina T. Forest, Uwe Kuhlmann, Peter Hildebrandt   +5 more
wiley   +1 more source

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

Ultragyors lineáris és nemlineáris optikai folyamatok makromolekulákon = Ultrafast linear and nonlinear optical processes on macromolecules [PDF]

, 2009
Mérőrendszerünkhöz új tükörkészletet és diszperzió szabályozó egységet fejlesztettünk ki, széles hullámhossz tartományban lehetővé téve (akár 40 fs-nál rövidebb) stabil fényimpulzusok keltését.
Bányász, Ákos, Garab, Győző, Groma, Géza, Hebling, János, Jávorfi, Tamás, Keszei, Erno, Osvay, Károly, Sarlós, Ferenc, Szipőcs, Róbert, Zimányi, László   +9 more
core  

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

The genome of the square archaeon Haloquadratum walsbyi : life at the limits of water activity [PDF]

, 2006
BACKGROUND: The square halophilic archaeon Haloquadratum walsbyi dominates NaCl-saturated and MgCl(2 )enriched aquatic ecosystems, which imposes a serious desiccation stress, caused by the extremely low water activity.
Bolhuis, Henk, Falb, Michaela, Oesterhelt, Dieter, Palm, Peter, Pfeiffer, Friedhelm, Rampp, Markus, Rodriguez-Valera, Francisco, Wende, Andy   +7 more
core   +2 more sources

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

Properties of Asp212—-Asn bacteriorhodopsin suggest that Asp212 and Asp85 both participate in a counterion and proton acceptor complex near the Schiff base [PDF]

, 1991
The gene coding for bacteriorhodopsin was modified in vitro to replace Asp212 with asparagine and expressed in Halobacterium halobium. X-ray diffraction measurements showed that the major lattice dimension of purple membrane containing the mutated ...
Chang, M, Fornés, J, Lanyi, JK, Needleman, R, Ni, B, Váró, G, White, SH   +6 more
core   +1 more source