Results 51 to 60 of about 289,056 (278)

AAA+ protein unfoldases—the Moirai of the proteome

FEBS Letters, EarlyView.
AAA+ unfoldases are essential molecular motors that power protein degradation and disaggregation. This review integrates recent cryo‐electron microscopy (cryo‐EM) structures and single‐molecule biophysical data to reconcile competing models of substrate translocation.
Stavros Azinas, Marta Carroni
wiley   +1 more source

Resonant X-ray diffraction studies on the charge ordering in magnetite

, 2006
Here we show that the low temperature phase of magnetite is associated with an effective, although fractional, ordering of the charge. Evidence and a quantitative evaluation of the atomic charges are achieved by using resonant x-ray diffraction (RXD ...
C. Marin, D. Mannix, E. Nazarenko, E. J. W. Verwey, J. E. Lorenzo, J. L. Hodeau, J. Philip, R. Hughes, Y. Joly   +8 more
core   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

The structure of coordination precursors as an effective tool for governing of size and morphology of ZnS and ZnO nanoparticles

Journal of Saudi Chemical Society, 2018
The zinc sulphide and zinc oxide micro- and nanoparticles of different shapes were synthesized from the five zinc coordination precursors, via controlled thermal decomposition process.
Rafal Kruszynski, Marcin Swiatkowski
doaj   +1 more source

Structure of catalase determined by MicroED. [PDF]

, 2014
MicroED is a recently developed method that uses electron diffraction for structure determination from very small three-dimensional crystals of biological material.
Gonen, Tamir, Hattne, Johan, Nannenga, Brent L, Reyes, Francis E, Shi, Dan   +4 more
core   +1 more source

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

FEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill, Yelyzaveta Pulnova, Elke De Zitter, Helen M. Ginn, Briony A. Yorke   +4 more
wiley   +1 more source

Dose, exposure time, and resolution in Serial X-ray Crystallography

, 2007
The resolution of X-ray diffraction microscopy is limited by the maximum dose that can be delivered prior to sample damage. In the proposed Serial Crystallography method, the damage problem is addressed by distributing the total dose over many identical ...
Chapman, H. N., Doak, R. B., Fromme, P., Hembree, G., Howells, M., Rez, P., Schmidt, K., Shapiro, D., Spence, J. C. H., Starodub, D., Weierstall, U.   +10 more
core   +1 more source

Beyond crystallography: diffractive imaging using coherent x-ray light sources [PDF]

, 2015
X-ray crystallography has been central to the development of many fields of science over the past century. It has now matured to a point that as long as good-quality crystals are available, their atomic structure can be routinely determined in three ...
Ishikawa, T, Miao, J, Murnane, MM, Robinson, IK   +3 more
core   +1 more source

The crystal structure of the Borrelia burgdorferi nicotinamidase BBE22 resolves a long‐standing annotation error

FEBS Open Bio, EarlyView.
The crystal structure of Borrelia burgdorferi nicotinamidase (PncA/BBE22) reveals the correct full‐length protein initiated from a non‐canonical AUU start codon. The structure validates previous biochemical findings and resolves a long‐standing annotation error, demonstrating that the truncated database sequence is structurally incompatible with the ...
Kalvis Brangulis
wiley   +1 more source

Impact of Homocyclic and Heterocyclic Rings of Chalcones on Charge Transfer Behaviour: A Nonlinear Optical Study

Chemical Physics Impact
This paper presents the effects of incorporating thienyl and phenyl rings as the terminal ring in the cinnamoyl counterparts of chalcones with donor-acceptor-donor (D-A-D) push-pull setting, on their photophysical responses.
Nur Aisyah Mohamad Daud, Qin Ai Wong, Bi Sheng Ooi, Ching Kheng Quah, Farah Diana Ramzi, Yip-Foo Win, Parutagouda Shankaragouda Patil   +6 more
doaj   +1 more source