Results 61 to 70 of about 1,584 (183)

It started off as a Cys, how did it end up like this? Identifying the extent of unmodelled oxidatively modified cysteines within the Protein Data Bank

Acta Crystallographica Section D, EarlyView.
This work examines data contained within 118 215 structures in the Protein Data Bank for unmodelled difference density concomitant with unmodelled oxidatively damaged cysteines. This analysis demonstrates that site‐specific oxidation of residues is a phenomenon of which the experimenter should be aware, and highlights the need for a suitable detection ...
Samuel P. Foster, Anna J. Warren, C. Alistair Siebert, Jaswir Basran, Peter C. E. Moody   +4 more
wiley   +1 more source

Decoding THz‐Driven Dynamic Fingerprints of Ferroelectric Nanotwin Networks

Advanced Materials, Volume 38, Issue 32, 8 June 2026.
ABSTRACT Ultrafast polarization dynamics in ferroelectrics are of considerable interest for high‐speed tunable dielectrics and electro‐optics. Extended domain wall networks formed in ferroelectric twin nanodomains can support collective dynamics in the terahertz regime but require techniques that track polarization and strain evolution driven by ...
Xiaojiang Li, Aiden Ross, Vladimir A. Stoica, Sujit Das, Sankalpa Hazra, Huaiyu (Hugo) Wang, Hari Padma, Matthias C. Hoffmann, Patrick Kramer, Sanghoon Song, Silke Nelson, Takahiro Sato, Diling Zhu, Ramamoorthy Ramesh, Lane W. Martin, Yue Cao, John W. Freeland, Aaron M. Lindenberg, Haidan Wen, Long‐Qing Chen, Venkatraman Gopalan   +20 more
wiley   +1 more source

Ultrafast Charge Carrier Dynamics in Layered CuO‐TiO2 Heterostructure via Time‐Resolved Soft X‐Ray Absorption Spectroscopy

Advanced Materials Interfaces, Volume 13, Issue 11, 9 June 2026.
Schematic illustration of the carrier dynamics in the layered CuO∖TiO2 heterostructure. ABSTRACT Understanding the ultrafast carrier dynamics at the p‐n heterojunctions is indispensable for designing efficient photocatalysts. In this work, we used element‐specific time‐resolved soft X‐ray absorption spectroscopy (tr‐XAS) to investigate the ultrafast ...
Abhishek Katoch, Kwangsik Jeong, Soohyung Park, Sunwoo Moon, Sang Han Park, Hyun S. Ahn   +5 more
wiley   +1 more source

Comment on Photosystem II: light‐dependent oscillation of ligand composition at its active site: existence of O6 in S3‐state photosystem II revealed by omit maps

Acta Crystallographica Section D, Volume 82, Issue 6, Page 574-586, June 2026.
We reanalyzed our XFEL data, the results of which showed the insertion of O6 during the S2–S3 transition in water oxidation by photosystem II. These results contradict the interpretation proposed by Wang that there is no insertion of O6 during the S2–S3 transition.Photosystem II (PSII) catalyzes the light‐driven oxidation of water to molecular oxygen ...
Hongjie Li, Michihiro Suga, Jian-Ren Shen   +2 more
wiley   +1 more source

Femtosecond X-ray cross-correlation analysis of disordered crystals forming in a supercooled atomic liquid

IUCrJ
We demonstrate an advanced scattering method for accessing the 3D reciprocal space of crystalline structures forming in a rapidly supercooled noble-gas liquid using a combination of femtosecond X-ray diffraction and X-ray cross-correlation analysis.
Johannes Möller, Michele Caresana, Alexander Schottelius, Felix Lehmkühler, Ulrike Boesenberg, Frédéric Caupin, Francesco Dallari, Tiberio A. Ezquerra, José M. Fernández, Luca Gelisio, Claudia Goy, Jörg Hallmann, Anton Kalinin, Chan Kim, Ruslan P. Kurta, Dmitry Lapkin, Francesco Mambretti, Markus Scholz, Roman Shayduk, René Steinbrügge, Florian Trinter, Ivan A. Vartanyants, Alexey Zozulya, Davide E. Galli, Gerhard Grübel, Anders Madsen, Robert E. Grisenti   +26 more
doaj   +1 more source

Photoisomerization detected in a fully wavelength‐tunable rhodopsin mimic system

Acta Crystallographica Section D, Volume 82, Issue 6, Page 664-671, June 2026.
The mechanism of retinal photoswitching is illuminated in a designed rhodopsin mimic. Two mechanisms, a conventional cis–trans isomerization and an unprecedented `photodehydration', are observed at atomic resolution in single crystals.We describe the photoisomerization of the retinylidene protonated Schiff base in human retinol‐binding protein II ...
Nona Ehyaei, Courtney Bingham, Katelyn Silva, Zahra Nossoni, Hadi Nayebi Gavgani, Meisam Nosrati, Joelle Eaves, Mustapha Akhdar, Chrysoula Vasileiou, Babak Borhan, James H. Geiger   +10 more
wiley   +1 more source

The structure of intact and active Photosystem II from Arabidopsis thaliana at 2.44 Å resolution

New Phytologist, Volume 250, Issue 5, Page 3014-3025, June 2026.
Summary Photosystem II (PS II) is a large membrane‐bound protein complex that catalyses light‐driven water oxidation in plants and cyanobacteria. The structure of PS II is well studied in cyanobacteria; however, there are very few PS II structures from plants.
Jack Forsman, André T. Graça, Abuzer Orkun Aydin, Michael Hall, Rana Hussein, Wolfgang P. Schröder, Johannes Messinger   +6 more
wiley   +1 more source

Making sense of SFX data: standards for data and structure validation for a non-standard experiment that has come of age

IUCrJ, 2021
Clyde A. Smith
doaj   +1 more source

The European XFEL - Status and Commissioning

, 2016
Proceedings of the 25th Russian Particle Accelerator Conf., RuPAC2016, St.
openaire   +2 more sources

Damage before destruction? X-ray-induced changes in single-pulse serial femtosecond crystallography

IUCrJ
Serial femtosecond crystallography (SFX) exploits extremely brief X-ray free-electron laser pulses to obtain diffraction data before destruction of the crystal.
Lewis J. Williams, Amy J. Thompson, Philipp Dijkstal, Martin Appleby, Greta Assmann, Florian S. N. Dworkowski, Nicole Hiller, Chia-Ying Huang, Tom Mason, Samuel Perrett, Eduard Prat, Didier Voulot, Bill Pedrini, John H. Beale, Michael A. Hough, Jonathan A. R. Worrall, Robin L. Owen   +16 more
doaj   +1 more source