Results 81 to 90 of about 4,651,873 (337)

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

FEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

PhotoD with LSST: Stellar Photometric Distances Out to the Edge of the Galaxy

The Astronomical Journal
As demonstrated with the Sloan Digital Sky Survey (SDSS), Pan-STARRS, and most recently with Gaia data, broadband near-UV to near-IR stellar photometry can be used to estimate distance, metallicity, and interstellar dust extinction along the line of ...
Lovro Palaversa, Željko Ivezić, Neven Caplar, Karlo Mrakovčić, Bob Abel, Oleksandra Razim, Filip Matković, Connor Yablonski, Toni Šarić, Tomislav Jurkić, Sandro Campos, Melissa DeLucchi, Derek Jones, Konstantin Malanchev, Alex I. Malz, Sean McGuire, Mario Jurić   +16 more
doaj   +1 more source

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

FEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa, Shinya Sugimoto, Toshiro Sato   +2 more
wiley   +1 more source

Astronomical Distance Determination in the Space Age: Secondary Distance Indicators [PDF]

, 2018
The formal division of the distance indicators into primary and secondary leads to difficulties in description of methods which can actually be used in two ways: with, and without the support of the other methods for scaling.
Holanda, R.F.L., Takeo Minezaki, Guido Risaliti, Czerny, B, Bejger, M., Toonen, S., Rachael Beaton, Dall Ora, M, Salaris, M., Holanda, RFL, Dall'Ora, M., Risaliti, G., Czerny, B., Risaliti, G, Minezaki, T., Jensen, JB, Minezaki, T, Jensen, J.B., Yoshii, Y, Jha, S.W., Silvia Toonen, Cackett, E, Saurabh W. Jha, Lusso, E., Michał Bejger, Joseph B. Jensen, Lusso, E, Salaris, M, Beaton, R., Edward Cackett, Jha, SW, Elisabeta Lusso, Massimo Dall’Ora, Maurizio Salaris, Beaton, R, Yuzuru Yoshii, Yoshii, Y., Bejger, M, Bożena Czerny, R. F. L. Holanda, Toonen, S, Cackett, E.   +41 more
core   +1 more source

Araucaria Project: Pulsating stars in binary systems and as distance indicators

EPJ Web of Conferences, 2017
Pulsating stars, like Cepheids or RR Lyrae stars, are ones of the most important distance indicators. They are also key objects for testing the predictions of stellar evolution and stellar pulsation theory.
Pilecki Bogumił, Gieren Wolfgang, Pietrzyński Grzegorz, Smolec Radosław   +3 more
doaj   +1 more source

Cepheids as Distance Indicators

, 1996
We review the use of Cepheids as distance indicators with particular emphasis on the methods which have been applied to HST observations of Cepheids. The calibration of the period-luminosity relations is examined in detail and we identify possible problems with the existing calibrations. New V- and I-band period luminosity relations are presented based
openaire   +2 more sources

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

FEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee, Junho Jeong, Chae Yeong Lee, Hyunjoon Cho, Man Hwan Oh, Je Chul Lee, Jee‐Young Lee, Yangmee Kim   +7 more
wiley   +1 more source

The TRGB-SBF Project. I. A Tip of the Red Giant Branch Distance to the Fornax Cluster with JWST

The Astrophysical Journal
Differences between the local value of the Hubble constant measured via the distance ladder versus the value inferred from the cosmic microwave background with the assumption of the standard ΛCDM model have reached over 5 σ significance.
Gagandeep S. Anand, R. Brent Tully, Yotam Cohen, Dmitry I. Makarov, Lidia N. Makarova, Joseph B. Jensen, John P. Blakeslee, Michele Cantiello, Ehsan Kourkchi, Gabriella Raimondo   +9 more
doaj   +1 more source

Distance Advanced Training of Preschool Teachers in Ukraine: Quantitative Indicators

Online Learning in Educational Research
The study highlights the stages of organizing distance learning advanced training courses. It is a quantitative analysis of preschool teachers who have completed advanced training courses under the «Education Care» educational program. For this research,
Tetiana Sharova, Volodymyr Voronov, Sergii Sharov, Halyna Kolomoiets, Anna Voronova   +4 more
doaj   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

Molecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source