Results 51 to 60 of about 545,608 (316)

Symmetric units in integral group rings

Publicationes Mathematicae Debrecen, 1997
In this paper, we study the question of when the symmetric units in an integral group ring ZG form a multiplicative group. When G is periodic, necessary and sufficient conditions are given for this to occur.
Bódi, Viktor, Parmenter, M. M.
openaire   +2 more sources

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

[MoO4]2−-templated D4h-symmetric sandwich Ag13 nanocluster coprotected with thiolate and phosphine

Polyoxometalates, 2023
Mixed-ligand and anion-templated strategies in constructing metal nanoclusters are intricate and ingenious processes that face challenges to be studied. Herein, we report a cationic [Ag13(MoO4)4(SC6H4iPr)2(dppp)8]3+ (Ag13) nanocluster, which is templated
Jin-Ping Gao, Zhikai Qi, Fu-Qiang Zhang, Xian-Ming Zhang   +3 more
doaj   +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

Emergence of brain-like mirror-symmetric viewpoint tuning in convolutional neural networks

eLife
Primates can recognize objects despite 3D geometric variations such as in-depth rotations. The computational mechanisms that give rise to such invariances are yet to be fully understood.
Amirhossein Farzmahdi, Wilbert Zarco, Winrich A Freiwald, Nikolaus Kriegeskorte, Tal Golan   +4 more
doaj   +1 more source

2-[(1-Methyl-1H-pyrrol-2-yl)carbonylmethyl]isoindoline-1,3-dione

Acta Crystallographica Section E, 2009
The asymmetric unit of the title compound, C15H12N2O3, contains two almost identical molecules forming an nearly C2-symmetric dimeric pattern. The dihedral angles between the pyrrole ring and the phthalimide unit are 82.95 (8) and 86.57& ...
Joachim Schlosser, Dieter Schollmeyer, Stefan Laufer, Christian Peifer   +3 more
doaj   +1 more source

First principles study of a sodium borosilicate glass-former II: The glass state [PDF]

, 2014
We use ab initio simulations to investigate the properties of a sodium borosilicate glass of composition 3Na_2O-B_2O_3-6SiO_2. We find that the broadening of the first peak in the radial distribution functions g_BO(r) and g_BNa(r) is due to the presence ...
Ispas, Simona, Kob, Walter, Pedesseau, Laurent   +2 more
core   +3 more sources

Peroxidasin enables melanoma immune escape by inhibiting natural killer cell cytotoxicity

Molecular Oncology, EarlyView.
Peroxidasin (PXDN) is secreted by melanoma cells and binds the NK cell receptor NKG2D, thereby suppressing NK cell activation and cytotoxicity. PXDN depletion restores NKG2D signaling and enables effective NK cell–mediated melanoma killing. These findings identify PXDN as a previously unrecognized immune evasion factor and a potential target to improve
Hsu‐Min Sung, David Bickel, Lena C. M. Krause, Daria Ezeriņa, Christian Ickes, Julian Wojtachnia, Christine S. Gibhardt, Magdalena Shumanska, Khadija Wahni, Andrea Paluschkiwitz, Julia Malo Pueyo, Ekaterina Baranova, Wim Vranken, Hedwig Stanisz, Ioana Stejerean‐Todoran, Michael P. Schön, Joris Messens, Ivan Bogeski   +17 more
wiley   +1 more source

Numerical analysis of pressure fluctuation characteristics of axial flow pump device of edge pump unit in multi-unit pumping station

AIP Advances
Asymmetric layout gate station projects are prevalent in gate station engineering. When multiple pump units operate within such projects, the inflow patterns of the pump devices at different stations exhibit significant variations.
Sihai Li, Yi Luan, Yongbing Xu, Xizhu Liu, Fan Yang, Guiying Xu   +5 more
doaj   +1 more source

Crystal structures of five gold(I) complexes with methylpiperidine ligands

Acta Crystallographica Section E: Crystallographic Communications
In bis(4-methylpiperidine-κN)gold(I) chloride, [Au(C6H13N)2]Cl (1), the methyl groups are, as expected, equatorial at the piperidine ring, but the Au atom is axial; this is the case for all five structures reported here, as is the expected linear ...
Cindy Döring, Peter G. Jones
doaj   +1 more source