Results 71 to 80 of about 7,706,107 (291)
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
HelioSpectrotron 5000: an interactive solar atlas
The Open Journal of AstrophysicsHelioSpectrotron 5000 (HS5000) is an interactive, multi-resolution solar spectral atlas designed to facilitate direct comparison between high-resolution reference spectra and observations obtained with a wide range of ground-based instruments.
Alexander G.M. Pietrow
doaj +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
Spectral line identification from a photoionised silicon plasma in emission
Journal of Plasma PhysicsNext-generation X-ray satellite telescopes such as XRISM, NewAthena and Lynx will enable observations of exotic astrophysical sources at unprecedented spectral and spatial resolution. Proper interpretation of these data demands that the accuracy of the models is at least within the uncertainty of the observations.
Patricia Bo Cho +9 more
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Statistical Methods in the Identification and Prediction of the Solar X-Ray Spectral Lines [PDF]
Symposium - International Astronomical Union, 1975 SummaryWith the accumulation of numerous identifications of the solar X and XUV spectral lines, the need is felt for systemizing such identification. The results are presented below.
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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
The Astrophysical JournalA rich spectrum of molecular hydrogen (H _2 ) emission lines is seen in sensitive observations from the far-ultraviolet (FUV) channels of the Interface Region Imaging Spectrograph (IRIS) during flare activity in solar active region NOAA Active Region ...
Sarah A. Jaeggli, Adrian N. Daw
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Identification of single spectral lines through machine learning
, 2019 The Identification of redshifted spectral lines is unequivocal when multiple lines with high S/N ratios are detected. In these cases, the distances measured between each pair of lines represent the reference used for the identification. However, when only one spectral line is detected, its identification becomes extremely difficult.
openaire +2 more sources
SPECTRAL OPTICAL MONITORING OF THE NARROW-LINE SEYFERT 1 GALAXY Ark 564 [PDF]
, 2012 We present the results of a long-term (1999–2010) spectral optical monitoring campaign of the active galactic nucleus (AGN) Ark 564, which shows a strong Fe ιι line emission in the optical.
Luis Carrasco Bazúa +3 more
core
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