Results 51 to 60 of about 1,012,554 (263)

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

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

FEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai, Mizuki Seo, Gyath Karadsheh, Fachrur Rizal Mahendra, Máté Á Demény, Ferenc Győry, János András Mótyán, László Fésüs, Endre Kristóf, Rini Arianti   +9 more
wiley   +1 more source

An ab initio study of 3s core-level x-ray photoemission spectra in transition metals

, 2010
We calculate the $3s$- and $4s$-core-level x-ray photoemission spectroscopy (XPS) spectra in the ferromagnetic and nonmagnetic transition metals by developing an \emph{ab initio} method.
Jun-ichi Igarashi, Manabu Takahashi, V. L. Morruzi   +2 more
core   +1 more source

3D Channel Models: Principles, Characteristics, and System Implications [PDF]

IEEE Communications Magazine, 2017
This article presents a comprehensive review of the principles and characteristics of 3D channel models. We propose a framework for a 3D channel extension of the widely used 2D 3GPP/ ITU generic channel model. We describe the main components and challenges of the newly proposed 3D channel model and the motivations that lie behind them.
Almesaeed, Reham N F, Mellios, Evangelos, Doufexi, Angela, Nix, Andrew R, Ameen, Araz   +4 more
openaire   +2 more sources

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Skywave Ionosphere Communication Channel Characteristics for Hypersonic Vehicles at a Typical Frequency of 14 MHz

Remote Sensing
This study starts from the physical perspective of electromagnetic wave propagation in ionosphere media, and the skywave OTH (over-the-horizon) ionosphere channel model is established for hypersonic vehicles based on the ray-tracing method, and this ...
Zongyuan Liu, Lei Shi, Bo Yao, Zijian Teng, Yifan Wang, Fangyan Li, Zhiyi Chen   +6 more
doaj   +1 more source

Non-Markovian Stochastic Resonance

, 2003
The phenomenological linear response theory of non-Markovian Stochastic Resonance (SR) is put forward for stationary two-state renewal processes. In terms of a derivation of a non-Markov regression theorem we evaluate the characteristic SR-quantifiers; i.
B. Hille, D. R. Cox, Igor Goychuk, J. J. Collins, J. J. Collins, L. S. Liebovitch, M. Toda, P. Hänggi, Peter Hänggi, R. Benzi, R. L. Stratonovich   +10 more
core   +2 more sources

Linking neurogenesis, oligodendrogenesis, and myelination defects to neurodevelopmental disruption in primary mitochondrial disorders

FEBS Letters, EarlyView.
Mitochondrial remodeling shapes neural and glial lineage progression by matching metabolic supply with demand. Elevated OXPHOS supports differentiation and myelin formation, while myelin compaction lowers mitochondrial dependence, revealing mitochondria as key drivers of developmental energy adaptation.
Sahitya Ranjan Biswas, Porter L. Tomsick, Alicia M. Pickrell, Paul D. Morton   +3 more
wiley   +1 more source

A nonlinear theory of non-stationary low Mach number channel flows of freely cooling nearly elastic granular gases

, 2008
We use hydrodynamics to investigate non-stationary channel flows of freely cooling dilute granular gases. We focus on the regime where the sound travel time through the channel is much shorter than the characteristic cooling time of the gas. As a result,
A. G. Doroshkevich, A. G. Doroshkevich, Arkady Vilenkin, Baruch Meerson, C. Wagner, G. B. Whitham, I. Fouxon, Itzhak Fouxon, L. D. Landau, M. Abramowitz, N. V. Brilliantov, W. Ostwald, Y. Bromberg, Ya. B. Zel’dovich   +13 more
core   +1 more source

Aggressive prostate cancer is associated with pericyte dysfunction

Molecular Oncology, EarlyView.
Tumor‐produced TGF‐β drives pericyte dysfunction in prostate cancer. This dysfunction is characterized by downregulation of some canonical pericyte markers (i.e., DES, CSPG4, and ACTA2) while maintaining the expression of others (i.e., PDGFRB, NOTCH3, and RGS5).
Anabel Martinez‐Romero, Ane Martinez‐Larrinaga, Joaquim Grego‐Bessa, Saioa Garcia‐Longarte, Hielke van Splunder, Ianire Astobiza, Amaia Ercilla, Laura Bozal‐Basterra, Isabel Mendizabal, Pilar Villacampa, Arkaitz Carracedo, Mariona Graupera   +11 more
wiley   +1 more source