Results 51 to 60 of about 1,003,439 (343)

G-quadruplex Structures Contribute to Differential Radiosensitivity of the Human Genome

open access: yesiScience, 2019
Summary: DNA, the fundamental unit of human cell, generally exists in Watson-Crick base-paired B-DNA form. Often, DNA folds into non-B forms, such as four-stranded G-quadruplexes.
Nitu Kumari   +7 more
doaj   +1 more source

Structural insight into TPX2-stimulated microtubule assembly [PDF]

open access: yes, 2017
During mitosis and meiosis, microtubule (MT) assembly is locally upregulated by the chromatin-dependent Ran-GTP pathway. One of its key targets is the MT-associated spindle assembly factor TPX2.
Nogales, Eva   +3 more
core   +2 more sources

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

open access: yesFEBS 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

Essential role of p21Waf1/Cip1 in the modulation of post-traumatic hippocampal Neural Stem Cells response

open access: yesStem Cell Research & Therapy
Background Traumatic Brain Injury (TBI) represents one of the main causes of brain damage in young people and the elderly population with a very high rate of psycho-physical disability and death.
Francesco Chiani   +13 more
doaj   +1 more source

Inhibitors of sterol synthesis. Submicromolar 14 alpha-ethyl-5 alpha-cholest-7-ene-3 beta, 15 alpha-diol causes a major modification of the sterol composition of CHO-K1 cells and a marked change in cell morphology.

open access: yesJournal of Lipid Research, 1994
Incubation of Chinese hamster ovary cells (CHO-K1) with 14 alpha-ethyl-5 alpha-cholest-7-ene-3 beta,15 alpha-diol (0.1 microM) in lipid-deficient medium led to a major change in cellular sterol composition, which was characterized by a very marked ...
A Izumi   +6 more
doaj   +1 more source

A novel N-terminal extension in mitochondrial TRAP1 serves as a thermal regulator of chaperone activity. [PDF]

open access: yes, 2014
Hsp90 is a conserved chaperone that facilitates protein homeostasis. Our crystal structure of the mitochondrial Hsp90, TRAP1, revealed an extension of the N-terminal β-strand previously shown to cross between protomers in the closed state. In this study,
Agard, David A   +5 more
core   +2 more sources

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

open access: yesFEBS 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   +3 more
wiley   +1 more source

Molecular Requirements for Ethanol Differential Allosteric Modulation of Ligand-Gated Ion Channels Based on Selective G Beta Gamma Modulation [PDF]

open access: yes, 2010
It is now believed that the allosteric modulation produced by ethanol in glycine receptors (GlyRs) depends on alcohol binding to discrete sites within the protein structure.
Aguayo, Luis G   +6 more
core   +1 more source

Micro- and nanosystems for biology and medicine [PDF]

open access: yes, 2009
The development of new tools and instruments for biomedical applications based on nano- (NEMS) or microelectromechanical systems technology (MEMS) are bridging the gap between the macro- and the nano-world.
Aebi, Ueli   +11 more
core   +1 more source

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