Results 91 to 100 of about 20,980,761 (308)
Nature CommunicationsThe ferroelectric oxide LaTaO4, with a layered perovskite-related structure, exhibits a reversible temperature-dependent phase transition between its low-temperature paraelectric and high-temperature ferroelectric states.
Shitao Wu +5 more
doaj +1 more source
FEBS Letters, EarlyView.Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell +2 more
wiley +1 more source
Structural and biochemical analysis of a B12 superbinder
FEBS Letters, EarlyView.BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices +3 more
wiley +1 more source
Untwisting the Caenorhabditis elegans embryo
eLife, 2015 The nematode Caenorhabditis elegans possesses a simple embryonic nervous system with few enough neurons that the growth of each cell could be followed to provide a systems-level view of development.
Ryan Patrick Christensen +16 more
doaj +1 more source
FEBS Letters, EarlyView.Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav +2 more
wiley +1 more source
AutoLEI: A step towards automatic 3D ED data processing
IUCrJA user-friendly interface has been developed for XDS, enabling efficient real-time and batch processing of 3D ED data to accelerate structure determination.
Shitao Wu, Yanhang Ma
doaj +1 more source
A Low-Resolution View of High-Resolution Spectroscopy
Publications of the Astronomical Society of the Pacific, 1995 The enormous cost of even relatively simple focal-plane instruments for 8 ± 2 meter telescopes is, inevitably, acting as a driver to produce very general-purpose spectrographs for each of them. Somewhat unexpectedly, the result seems to have been a convergence on very similar, cross-dispersed, R = lambda/Delta-lambda ~105 Echelles for nearly every such
openaire +3 more sources
The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation
FEBS Letters, EarlyView.Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge +6 more
wiley +1 more source
Annealing of Irradiation Defects in Si 3 N 4 : TEM Examination
Eurasian Journal of Physics and Functional MaterialsThe article presents the first results of the study of structural and morphological features of swift (220 MeV) xenon ion induced defects in polycrystalline Si 3N4 during post-irradiation heat treatment.
Anel Ibrayeva +3 more
doaj +1 more source
Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers
FEBS Letters, EarlyView.Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui +4 more
wiley +1 more source