Results 51 to 60 of about 1,208,682 (349)

X-ray sources in globular clusters

, 2004
Observations with BeppoSAX, RXTE and Chandra suggest that many of the bright X-ray sources in globular clusters have ultrashort binary periods. This is remarkable as such systems are not easily formed.
Verbunt, Frank
core   +2 more sources

Extended X-ray emission from non-thermal sources in the COSMOS field: A detailed study of a large radio galaxy at z=1.168 [PDF]

, 2012
X-ray selected galaxy group samples are usually generated by searching for extended X- ray sources that reflect the thermal radiation of the intragroup medium. On the other hand, large radio galaxies that regularly occupy galaxy groups also emit in the X-
Cappelluti, Nico, Civano, Francesca, Finoguenov, Alexis, Jelic, Vibor, Koekemoer, Anton, Schinnerer, Eva, Smolcic, Vernesa, Tanaka, Masayuki   +7 more
core   +4 more sources

The planar cell polarity protein Vangl2 interacts with the PDZ‐domains of Scribble but not with a unique PDZ‐like domain in Inturned

FEBS Letters, EarlyView.
Structural and biochemical characterisations show that the planar cell polarity (PCP) protein Inturned harbours a unique PDZ‐like domain that does not bind canonical PDZ‐binding motifs (PBMs) like that of another PCP protein Vangl2. In contrast, the apical‐basal polarity protein Scribble contains four PDZ domains that bind Vangl2, but one PDZ domain ...
Stephan Wilmes, Jan Brysch, Carmen Gelze, Lilli Meier, Daniel Kümmel   +4 more
wiley   +1 more source

Polymorphism in a high-entropy alloy

Nature Communications, 2017
Whether a polymorphic transition exists in high entropy alloys or not remains unclear since discovery of these alloys more than a decade ago. Here authors report an irreversible polymorphic transition fromfcc to hcp in the prototype FeCoCrMnNi high ...
Fei Zhang, Yuan Wu, Hongbo Lou, Zhidan Zeng, Vitali B. Prakapenka, Eran Greenberg, Yang Ren, Jinyuan Yan, John S. Okasinski, Xiongjun Liu, Yong Liu, Qiaoshi Zeng, Zhaoping Lu   +12 more
doaj   +1 more source

AEGIS: A Multi-wavelength Study of Spitzer Power-law Galaxies

, 2010
This paper analyzes a sample of 489 Spitzer/IRAC sources in the Extended Groth Strip whose spectral energy distributions fit a red power law from 3.6 to 8.0 \micron. The median for sources with known redshift is =1.6.
Ashby, M. L. N., Barmby, P., Fazio, G. G., Georgakakis, A., Ivison, R. J., Konidaris, N. P., Miyazaki, S., Nandra, K., Park, S. Q., Rosario, D. J. V., Willner, S. P.   +10 more
core   +1 more source

The Chandra Source Catalog [PDF]

, 2009
The Chandra Source Catalog (CSC) is a general purpose virtual X-ray astrophysics facility that provides access to a carefully selected set of generally useful quantities for individual X-ray sources, and is designed to satisfy the needs of a broad-based ...
Anderson, Craig S., Bonaventura, Nina R., Chen, Judy C., Davis, John E., Doe, Stephen M., Evans, Ian N., Evans, Janet D., Fabbiano, Giuseppina, Galle, Elizabeth C., Gibbs II, Danny G., Glotfelty, Kenny J., Grier, John D., Hain, Roger M., Hall, Diane M., Harbo, Peter N., He, Houck, John C., Karovska, Margarita, Kashyap, Vinay L., Lauer, Jennifer, McCollough, Michael L., McDowell, Jonathan C., Miller, Joseph B., Mitschang, Arik W., Morgan, Douglas L., Mossman, Amy E., Nichols, Joy S., Nowak, Michael A., Plummer, David A., Primini, Francis A., Refsdal, Brian L., Rots, Arnold H., Siemiginowska, Aneta, Sundheim, Beth A., Tibbetts, Michael S., Van Stone, David W., Winkelman, Sherry L., Xiangqun, Zografou, Panagoula   +38 more
core   +3 more sources

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Chandra deep X-ray observation on the Galactic plane

, 2002
Using the Chandra ACIS-I instruments, we have carried out the deepest X-ray observation on a typical Galactic plane region at l 28.5 deg, where no discrete X-ray sources have been known previously.
Bamba, A., Ebisawa, K., Kaneda, H., Maeda, Y., Paizis, A., Sato, G., Yamauchi, S.   +6 more
core   +2 more sources

Globular cluster X-ray sources [PDF]

, 2006
After a brief historical overview we discuss the luminous X-ray sources in globular clusters of our Galaxy. This is followed by an overview of the very luminous X-ray sources studied in globular clusters of 14 other galaxies, and a discussion of their formation and the relation to X-ray sources outside globular clusters.
Verbunt, F.W.M., Lewin, W.H.G.
openaire   +3 more sources

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source