Results 81 to 90 of about 3,434,376 (288)
In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS
FEBS Letters, EarlyView.We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka +11 more
wiley +1 more source
The Astrophysical JournalThe most metal-poor stars record the earliest metal enrichment triggered by Population III stars. By comparing observed abundance patterns with theoretical yields of metal-free stars, physical properties of their first star progenitors can be inferred ...
Ruizheng Jiang +3 more
doaj +1 more source
The Origin and Universality of the Stellar Initial Mass Function
, 2014 We review current theories for the origin of the Stellar Initial Mass Function (IMF) with particular focus on the extent to which the IMF can be considered universal across various environments.
Bastian, Nathan +7 more
core +1 more source
FEBS Letters, EarlyView.The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li +2 more
wiley +1 more source
The Initial Mass Function of the Galactic Early-type Field Stars Based on the LAMOST Survey
The Astrophysical JournalResearch on the high-mass end of the initial mass function (IMF) has been limited due to a scarcity of samples. Recently, Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST), as the most efficient spectroscopic telescope, has provided new ...
Qida Li +6 more
doaj +1 more source
The Initial Mass Function of GMCs
, 2004 The properties of GMCs in several Local Group galaxies are quantified and compared. It is found that the mass spectrum of GMCs varies from galaxy to galaxy. The variations are significant and do not appear to be the result of systematic uncertainties.
Blitz, Leo, Rosolowsky, Erik
openaire +2 more sources
Cell wall target fragment discovery using a low‐cost, minimal fragment library
FEBS Letters, EarlyView.LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan +5 more
wiley +1 more source
Intense Star Cluster Formation: Stellar Masses, the Mass Function, and the Fundamental Mass Scale
The Astrophysical Journal LettersWithin the birth environment of a massive globular cluster, the combination of a luminous young stellar population and a high column density induces a state in which the thermal optical depth and radiation pressure are both appreciable.
Christopher D. Matzner
doaj +1 more source
The bimodal initial mass function in the Orion Nebula Cloud
, 2016 Due to its youth, proximity and richness the Orion Nebula Cloud (ONC) is an ideal testbed to obtain a comprehensive view on the Initial Mass Function (IMF) down to the planetary mass regime.
Bayo, A. +7 more
core +1 more source
The Initial Mass Function in Starbursts [PDF]
, 2005 The history of the initial mass function (IMF) in starburst regions is reviewed. The IMFs are no longer believed to be top-heavy, although some super star clusters, whether in starburst regions or not, could be. General observations of the IMF are discussed to put the starburst results in perspective.
openaire +1 more source