Results 81 to 90 of about 226,393 (319)

Core to Cosmic Edge: SIMBA-C’s New Take on Abundance Profiles in the Intragroup Medium at z = 0

Universe
We employ the simba-c cosmological simulation to study the impact of its upgraded chemical enrichment model (Chem5) on the distribution of metals in the intragroup medium (IGrM).
Aviv Padawer-Blatt, Zhiwei Shao, Renier T. Hough, Douglas Rennehan, Ruxin Barré, Vida Saeedzadeh, Arif Babul, Romeel Davé, Chiaki Kobayashi, Weiguang Cui, François Mernier, Ghassem Gozaliasl   +11 more
doaj   +1 more source

The role of histone modifications in transcription regulation upon DNA damage

FEBS Letters, EarlyView.
This review discusses the critical role of histone modifications in regulating gene expression during the DNA damage response (DDR). By modulating chromatin structure and recruiting repair factors, these post‐translational modifications fine‐tune transcriptional programmes to maintain genomic stability.
Angelina Job Kolady, Siyao Wang
wiley   +1 more source

About the chemical composition of delta Scuti - the prototype of the class of pulsating variables

, 2004
We present chemical abundances in the photosphere of $\delta$ Scuti -- the prototype of the class of pulsating variables -- determined from the analysis of a spectrum obtained at Terskol observatory 2 meter telescope with resolution $R=52,000$, signal to
Gopka, V., Kang, F., Kim, C., Musaev, F., Yushchenko, A.   +4 more
core   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source

The AMBRE Project: searching for the closest solar siblings

, 2018
Finding solar siblings, that is, stars that formed in the same cluster as the Sun, will yield information about the conditions at the Sun's birthplace.
Adibekyan, V., de Laverny, P., Delgado-Mena, E., Ferreira, A. C. S., Hakobyan, A. A., Kordopatis, G., Recio-Blanco, A., Santos, N. C., Sousa, S. G., Tsantaki, M.   +9 more
core   +1 more source

Chemical Abundances in Globular Clusters [PDF]

Proceedings of XII International Symposium on Nuclei in the Cosmos — PoS(NIC XII), 2013
The Milky Way globular clusters are ideal laboratories for testing the predictions of nuclear astrophysics. Driven by Hubble Space Telescope photometry and high-resolution multi-object spectrographs on 8m-class telescopes, the study of chemical abundances in globular clusters is a vibrant area of astronomical research.
openaire   +1 more source

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

FEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva, Puspa Kunwar, Md Ibnul Rifat Rahman, Joanna Koryo Kwao, Nathan Lehman, Zihan Zhang, Trenton Paul, Claire Cheng, Nicholas Truex, Hui‐Ting Lee, Jun Zhang   +10 more
wiley   +1 more source

BBN and the Primordial Abundances

, 2005
The relic abundances of the light elements synthesized during the first few minutes of the evolution of the Universe provide unique probes of cosmology and the building blocks for stellar and galactic chemical evolution, while also enabling constraints ...
C. Chiappini, D. Kirkman, D.N. Spergel, G. Steigman, G. Steigman, I. Iben, J. Lequeux, J. Melendez, J.A. Thorburn, J.N. Bahcall, J.P. Kneller, K.A. Olive, L. Randall, M. Kawasaki, M.H. Pinsonneault, P. Bonifacio, R.T. Rood, S. Cassisi, S.G. Ryan, S.M. Viegas, T.M. Bania, V. Barger   +21 more
core   +2 more sources

Solar system chemical abundances corrected for systematics [PDF]

Monthly Notices of the Royal Astronomical Society: Letters, 2014
Abstract The relative chemical abundances between CI meteorites and the solar photosphere exhibit a significant trend with condensation temperature. A trend with condensation temperature is also seen when the solar photospheric abundances are compared to those of nearby solar twins. We use both these trends to determine the alteration of
openaire   +2 more sources

Cell density–dependent nuclear‐cytoplasmic shuttling of SETDB1 integrates with Hippo signaling to regulate YAP1‐mediated transcription

FEBS Letters, EarlyView.
At low cell density, SETDB1 and YAP1 accumulate in the nucleus. As cell density increases, the Hippo pathway is gradually activated, and SETDB1 is associated with increased YAP1 phosphorylation. At high cell density, phosphorylated YAP1 is sequestered in the cytoplasm, while SETDB1 becomes polyubiquitinated and degraded by the ubiquitin–proteasome ...
Jaemin Eom, Jaewoong Jang, Jung Sun Park, Yong‐Kook Kang   +3 more
wiley   +1 more source