Results 131 to 140 of about 34,754,919 (296)

A thousand looks at X Persei: X-ray spectroscopy at high time resolution

Astronomy & Astrophysics
Context. X Persei is a classical Be/X-ray binary composed of an O9.5III-B0V Be type star and a neutron star (NS). The NS exhibits coherent pulsations with a spin period of ∼837 s, orbiting the Be star with ∼250 d period.
Sanjurjo-Ferrín G., Torrejón J. M., Rodes-Roca J. J., Postnov K., Planelles-Villalva J., Oskinova L.   +5 more
doaj   +1 more source

Biophysical approaches for studying viral entry

FEBS Letters, EarlyView.
Viruses infect all living organisms and have been responsible for major epidemics and pandemics. Their ongoing evolutionary battle with host defenses creates a constant need for improved tools to study viral behavior. Advancing methods to probe viral attachment, fusion, and genome release deepen our understanding of how infections begin and support the
Inbar Yosibash, Raya Sorkin
wiley   +1 more source

Lithium and the evolution of intermediate-mass T Tauri and Herbig stars

Astronomy & Astrophysics
Context. Interior models predict that stellar envelopes change from convective to radiative during the pre-main-sequence (pre-MS) evolution of intermediate-mass stars.
Mendigutía I., Campbell-White J., Montesinos B., Maldonado J., Fullana-García L., Mirouh G. M., Meeus G., Vioque M., Sicilia-Aguilar A., Zapatero-Osorio M. R., Villaver E., Kahar R.   +11 more
doaj   +1 more source

The human gut microbiome across the life course

FEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero, Basak Bahcivanci, Antonietta Hayhoe, Animesh Acharjee, Ezgi Özkurt   +4 more
wiley   +1 more source

Septin 9 PB domains coordinate centrosome positioning and microtubule acetylation to control epithelial polarity

FEBS Letters, EarlyView.
Septin 9 polybasic domains couple phosphoinositide‐rich membrane binding to centrosome positioning, Golgi organization, and microtubule acetylation to control epithelial polarity. Their loss disrupts this axis, causing centrosome mispositioning, Golgi fragmentation, reduced microtubule acetylation, and polarity inversion via upregulation of the ...
Ting ting Cai, Mohyeddine Omrane, Nassima Benzoubir, Didier Samuel, Ama Gassama‐Diagne   +4 more
wiley   +1 more source

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

FEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto, Masatomo So, Ayako Furukawa, Kenji Sugase   +3 more
wiley   +1 more source

Investigation of Projected Rotational Velocities of Be-type Stars in LAMOST DR7

The Astrophysical Journal
Stellar rotation plays a key role in the transfer of angular momentum, and a large sample of Be-type stars with reliable projected rotational velocities is crucial for understanding their formation and evolution.
Zhicun Liu, Jiao Li, Jiaming Liu, Chao Liu, Xiao-Long Wang, Guozhen Hu, Wenyuan Cui   +6 more
doaj   +1 more source

Ultraviolet spectroscopy reveals a hot and luminous companion to the Be star+black hole candidate MWC 656

Astronomy & Astrophysics
The Galactic Be star binary MWC 656 was long considered the only known Be star+black hole (BH) system, making it a critical benchmark for models of massive binary evolution and for the expected X-ray emission of Be+BH binaries.
Müller-Horn Johanna, Ramachandran Varsha, El-Badry Kareem, Sander Andreas A. C., Bodensteiner Julia, Gies Douglas R., Götberg Ylva, Rivinius Thomas, Shenar Tomer, Schösser Elisa C., Wang Luqian, Bieryla Allyson, Buchhave Lars A., Latham David W.   +13 more
doaj   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

FEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace, Alyssa Borges, Charles Arnaud, Tove Karlsson, Nina K. Bröker, Stefanie Barbirz, Marta Bally   +6 more
wiley   +1 more source

The Be star o Cas is indeed the primary of a triple system

Astronomy & Astrophysics
Analysis of radial velocities of two narrow absorption components in the Mg II 4481 Å line demonstrated that the secondary of the Be star o Cas is indeed a close binary system composed of two B7 stars orbiting each other with a period of 11.″6604 11
Harmanec P., Yang S., Šlechta M., Grundstrom E. D., Ribeiro J., Harmanec A.   +5 more
doaj   +1 more source