Results 61 to 70 of about 37,443 (293)

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

The Spectroscopic and Photometric Study of a Star Cluster Sample in Andromeda Halo

The Astronomical Journal
Halo star clusters serve as vital tracers for the formation and evolution of the Andromeda galaxy. In this work, we present physical parameters for 29 M31 halo star clusters, derived from a combination of spectroscopic and photometric data.
Hongrui Gu, Zhou Fan, Bingqiu Chen, Xiaoying Pang, Juanjuan Ren, Ruizheng Jiang, Song Wang, Kefeng Tan, Nan Song, Chun Li, Jie Zheng, Gang Zhao, Wei Wang, Yuqin Chen, Jingkun Zhao, Haining Li, Yihan Song, Haibo Yuan, Ali Luo, Yujuan Liu, Yaqian Wu   +20 more
doaj   +1 more source

Field star diffusion in globular clusters [PDF]

Monthly Notices of the Royal Astronomical Society, 1992
A new interaction of globular clusters with galactic field stars, the deceleration (by dynamical friction) of high-velocity field stars diffusing through individual globular clusters, is investigated. This frictional interaction contributes to cluster heating and, in conjunction with disc shocking and other mechanisms, helps to reflate the evolution of
W. Peng, J. C. Weisheit
openaire   +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

Rotation and Hα Emission in a Young SMC Cluster: A Spectroscopic View of NGC 330

The Astrophysical Journal
We present an analysis of high-resolution optical spectra recorded for 30 stars of the split extended main-sequence turnoff of the young (∼40 Myr) Small Magellanic Cloud globular cluster NGC 330.
Paul I. Cristofari, Andrea K. Dupree, Antonino P. Milone, Matthew G. Walker, Mario Mateo, Aaron Dotter, John I. Bailey III   +6 more
doaj   +1 more source

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, Mathew Stanley, Olawale Raimi, Andrew T. Ferenbach, Helge C Dorfmueller, Daan M. F. van Aalten   +5 more
wiley   +1 more source

The Spatial Distribution of Intracluster Globular Clusters in the Fornax Cluster

The Astrophysical Journal
We investigate the spatial distribution of the intracluster globular clusters (ICGCs) detected in the core of the Fornax galaxy cluster. By separately modeling different components of the observed population of globular clusters (GCs), we confirm the ...
Raffaele D’Abrusco, Marco Mirabile, Michele Cantiello, Enrica Iodice, Avinash Chaturvedi, Michael Hilker, Giuseppina Fabbiano, Marilena Spavone, Maurizio Paolillo   +8 more
doaj   +1 more source

JWST/NIRCam Probes Young Star Clusters in the Reionization Era Sunrise Arc

The Astrophysical Journal, 2023
Star cluster formation in the early universe and its contribution to reionization remains largely unconstrained to date. Here we present JWST/NIRCam imaging of the most highly magnified galaxy known at z ∼ 6, the Sunrise arc.
Eros Vanzella, Adélaïde Claeyssens, Brian Welch, Angela Adamo, Dan Coe, Jose M. Diego, Guillaume Mahler, Gourav Khullar, Vasily Kokorev, Masamune Oguri, Swara Ravindranath, Lukas J. Furtak, Tiger Yu-Yang Hsiao, Abdurro’uf, Nir Mandelker, Gabriel Brammer, Larry D. Bradley, Maruša Bradač, Christopher J. Conselice, Pratika Dayal, Mario Nonino, Felipe Andrade-Santos, Rogier A. Windhorst, Nor Pirzkal, Keren Sharon, S. E. de Mink, Seiji Fujimoto, Adi Zitrin, Jan J. Eldridge, Colin Norman   +29 more
doaj   +1 more source

The influence of residual gas expulsion on the evolution of the Galactic globular cluster system and the origin of the Population II halo

, 2007
We present new results on the evolution of the mass function of the globular cluster system of the Milky Way, taking the effect of residual gas expulsion into account.
Bastian, Baumgardt, Baumgardt, Baumgardt, Baumgardt, Baumgardt, Binney, Boily, Boily, Boutloukos, Chaboyer, Chandar, Chiba, D'Antona, Dabringhausen, de Grijs, de la Fuente Marcos, Decressin, Decressin, Engargiola, Evstigneeva, Fall, Fall, Freeman, Freyer, Freyer, G. Parmentier, Gieles, Gieles, Gnedin, Goodwin, Gratton, Gratton, Gratton, H. Baumgardt, Harris, Harris, Harris, Hilker, Hills, Innanen, Jórdan, Kavelaars, Kroupa, Kroupa, Kroupa, Kroupa, Kroupa, Kroupa, Kroupa, Kundu, Kundu, Lada, Lamers, Larsen, Larsen, Mackey, McLaughlin, Meylan, Nantais, Okazaki, Ostriker, P. Kroupa, Parmentier, Parmentier, Parmentier, Piotto, Prantzos, Rosolowsky, Secker, Sneden, Solomon, Spitzer, Tamura, Tremaine, van den Bergh, van den Bergh, VandenBerg, Verschueren, Vesperini, Vesperini, Vesperini, Vesperini, Vesperini, Weidner, Weidner, Whitmore, Whitmore, Whitmore, Zhang, Zinn   +90 more
core   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source