Results 51 to 60 of about 222,342 (217)

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

Pilot Decontamination in CMT-based Massive MIMO Networks

, 2014
Pilot contamination problem in massive MIMO networks operating in time-division duplex (TDD) mode can limit their expected capacity to a great extent.
Aminjavaheri, Amir, Doyle, Linda E., Farhang, Arman, Farhang-Boroujeny, Behrouz, Marchetti, Nicola   +4 more
core   +1 more source

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

High Temperature Corrosion Behavior of Inconel 617 in Environment of Impure Helium

Yuanzineng kexue jishu
The helium coolant in the primary circuit of the high-temperature gas-cooled reactor (HTGR) contains trace of impurities such as CO, H2, H2O, and CH4, which have an adverse effect on the structural materials at elevated temperature. Mainly, the corrosion
ZHENG Wei1, HE Xuedong1, YIN Huaqiang1, DU Bin1, LI Haoxiang1, MA Tao1, PU Yang2, WANG Shangjun2
doaj   +1 more source

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

Speech Deepfake Attribution: The State of the Art and Prospects

Shuju Caiji Yu Chuli
With the rapid evolution of generative artificial intelligence， speech deepfake technologies have achieved unprecedented realism， enabling the synthesis of highly natural and speaker-specific speech from only a few seconds of reference audio.
ZHANG Xiongwei, ZHANG Qiang, SUN Meng, YANG Jibin, LI Yihao, GE Xiaoyi   +5 more
doaj   +1 more source

Local transport measurements on epitaxial graphene

, 2013
Growth of large-scale graphene is still accompanied by imperfections. By means of a four-tip STM/SEM the local structure of graphene grown on SiC(0001) was correlated with scanning electron microscope images and spatially resolved transport measurements.
Baringhaus, Jens, Edler, Frederik, Forti, Stiven, Neumann, Christoph, Stampfer, Christoph, Starke, Ulrich, Tegenkamp, Christoph   +6 more
core   +1 more source

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

Discovery of a Variable Star Population in NGC 2808

, 2004
We have applied the image subtraction method to images of the peculiar, bimodal-horizontal branch globular cluster NGC 2808, taken over a total of six nights over a range of five months.
Alard, Alard, Borissova, Buonanno, Catelan, Catelan, Catelan, Cincotta, Clement, Clement, Corwin, D'Antona, Foster, H. A. Smith, Harris, Harris, Harris, Harris, J. Borissova, Kaluzny, Kinman, Kopacki, Lafler, Lee, M. Catelan, Martin, Norris, Oosterhoff, Sandage, Searle, Soker, Sperl, Stellingwerf, Stetson, Sweigart, T. Michael Corwin, van den Bergh, van den Bergh   +37 more
core   +1 more source

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

FEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil, Anna Corrà, Annalisa Scapolatiello, Chengxiang Qiu, Gianluca Amadei   +4 more
wiley   +1 more source