Results 71 to 80 of about 3,875,215 (299)

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

SIGNALS of Giant H II Regions: A Spatially Resolved Analysis of NGC 604

The Astrophysical Journal
Observing giant H II regions at fine spatial scales uncovers detailed structures and reveals variations in ionization, abundance, and dynamical properties of ionized gas and the effect of stellar feedback.
Ray Garner III, Robert C. Kennicutt Jr., Laurent Drissen, Carmelle Robert, Laurie Rousseau-Nepton, Christophe Morisset, Philippe Amram, R. Pierre Martin, Emma Jarvis   +8 more
doaj   +1 more source

EMISSION LINE OBSERVATIONS OF H II REGIONS [PDF]

Symposium - International Astronomical Union, 1981
Optical observations provide a wealth of information on atomic abundances, the excitation (level of ionization), the kinetic temperature, and the density of the gas in H II regions. However, obscuration by dust limits optical observations of galactic H II regions to those which are nearby (within a few kpc) and which are unobscured by the molecular ...
openaire   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

SDSS-V LVM: A Spatially Resolved Study of the Physical Conditions and the Chemical Abundance Discrepancy in the Lagoon Nebula (M 8)

The Astrophysical Journal
The abundance discrepancy problem refers to the systematic differences observed between chemical abundances derived from collisionally excited lines (CELs) and recombination lines (RLs) of heavy ions.
Amrita Singh, Guillermo A. Blanc, Nimisha Kumari, J. E. Méndez-Delgado, Sebastián F. Sánchez, Christophe Morisset, Enrico Congiu, Kathryn Kreckel, Alexandre Roman-Lopes, Oleg Egorov, Niv Drory, Ravi Sankrit, Alfredo Mejía-Narváez, Evgeniya Egorova, Amy M. Jones, Dmitry Bizyaev, Natascha Sattler, Evelyn J. Johnston, Dante Minniti, Rodolfo de J. Zermeño, José G. Fernández-Trincado, Juna A. Kollmeier   +21 more
doaj   +1 more source

The Abundance Scatter in M33 from HII Regions: Is There Any Evidence for Azimuthal Metallicity Variations?

, 2011
Optical spectra of 25 H II regions in the inner two kpc of the M33 disk have been obtained with the GMOS spectrograph at the Gemini North telescope. The oxygen abundance gradient measured from the detection of the [O III]4363 auroral line displays a ...
Boulesteix, Bresolin, Bresolin, Bresolin, Courtes, Crockett, de Vaucouleurs, Dutil, Elmegreen, Esteban, Esteban, Fabio Bresolin, Freedman, Fu, Garnett, Gogarten, Hodge, Kennicutt, Kennicutt, Kewley, Kwitter, Magrini, Massey, Massey, Matteucci, Pagel, Relaño, Rosolowsky, Roy, Seaton, Tremonti, Tüllmann, Vila-Costas, Vílchez, Williams   +34 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 Metallicity–Electron Temperature Relationship in H ii Regions

The Astrophysical Journal
H ii region heavy-element abundances throughout the Galactic disk provide important constraints to theories of the formation and evolution of the Milky Way.
Dana S. Balser, Trey V. Wenger
doaj   +1 more source

Triggered massive and clustered stars formation by together H II regions G38.91-0.44 and G39.30-1.04

, 2013
We present the radio continuum, infrared, and CO molecular observations of infrared dark cloud (IRDC) G38.95-0.47 and its adjacent H II regions G38.91-0.44 (N74), G38.93-0.39 (N75), and G39.30-1.04.
Liu, Xiao-Lan, Wang, Jun-Jie, Xu, Jin-Long   +2 more
core   +1 more source

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, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source