Results 111 to 120 of about 7,372,917 (304)
Fundamental Geodetic Parameters 1999 [PDF]
Highlights of Astronomy, 2002 AbstractThe present (2000) set of primary “constants” and “current best estimates” is being reviewed. The emphasis within IUGG is on the consideration and numerical evaluation of temporal changes of relevant parameters. The accuracy of many parameters has been substantially improved, but many numerical values did not change significantly. Therefore, to
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Synergistic perspectives—How single‐molecule biophysics complement biochemical understanding
FEBS Letters, EarlyView.In this review, we discuss how ensemble biochemistry and single‐molecule approaches are complementary, outline commonly used single‐molecule techniques, and illustrate their relevance through two representative case studies: chromatin organization by SMC complexes and pathway choice during DNA double‐strand break repair.
Sara De Bragança +2 more
wiley +1 more source
International Initiative on X-ray Fundamental Parameters
International audienceAccurate critical data related to the interactions of X-rays with matter, called Fundamental Parameters (FP), are of paramount importance in many branches of physics and technology. These are the mass attenuation coefficients, X-ray
Lépy, Marie-Christine +2 more
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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
FEBS Letters, EarlyView.How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley +1 more source
Stellar Ages of TESS Stars, Adopting Spectroscopic Data from Gaia GSP-Spec
GalaxiesThe Gaia DR3 GSP-spec/TESS (GST) catalog combines asteroseismic data from NASA’s TESS mission with spectroscopic data from ESA’s Gaia mission, and contains about 116,000 Red Clump and Red Giant Branch stars, surpassing previous datasets in size and ...
Elisa Denis +6 more
doaj +1 more source
Sensitivity parameter and time variations of fundamental constants [PDF]
Journal of Physics G: Nuclear and Particle Physics, 2009 6 ...
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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
Parameters – Full Issue – Winter 2014 [PDF]
, 2014 Asia Pacific: Reassessing China by David Lai, Thomas M. Kane, Timothy L. Thomas, Christopher Bowen Johnston Middle East: Defeating the Islamic State by Huba Wass de Czege, Paul Rexton Kan A War Examined: Gaza 2014 by Eitan Shamir, Eado Hecht, Glenn E ...
Parameters, USAWC, USAWC Parameters
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RECENT VARIATIONS OF FUNDAMENTAL PARAMETERS AND THEIR IMPLICATIONS FOR GRAVITATION [PDF]
The Twelfth Marcel Grossmann Meeting, 2012 We compare the sensitivity of a recent bound on time variation of the fine structure constant from optical clocks with bounds on time varying fundamental constants from atomic clocks sensitive to the electron-to-proton mass ratio, from radioactive decay rates in meteorites, and from the Oklo natural reactor. Tests of the Weak Equivalence Principle also
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