Results 81 to 90 of about 1,480,665 (243)

Recent developments in nuclear structure theory: an outlook on the muonic atom program

, 2017
The discovery of the proton-radius puzzle and the subsequent deuteron-radius puzzle is fueling an on-going debate on possible explanations for the difference in the observed radii obtained from muonic atoms and from electron-nucleus systems.
Bacca, Sonia, Hernandez, Oscar Javier, Wendt, Kyle Andrew   +2 more
core   +1 more source

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

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

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +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

Ground State Properties of Even-Even 30−92Ca Isotopes Using HFB Theory. [PDF]

Kirkuk Journal of Science
Ground State (GS) Properties of Even-Even isotopes have been studied in frame of Skyrme Hartree-Fock-Bogoliubov using computer program HFBTHO V3.00 with three types of Skyrme interactions (HFB9, SLY4 and SLY5). The calculated nuclear properties including
Pshkow Mahmood
doaj   +1 more source

Coulomb screening effect on the nuclear-pasta structure

, 2004
Using the density functional theory (DFT) with the relativistic mean field (RMF) model, we study the non-uniform state of nuclear matter, ``nuclear pasta''. We self-consistently include the Coulomb interaction together with other interactions.
Chiba, Satoshi, Maruyama, Tomoyuki, Maruyama, Toshiki, Tanigawa, Tomonori, Tatsumi, Toshitaka, Voskresensky, Dmitri N.   +5 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

Nuclear structure far from stability

, 2004
Modern nuclear structure theory is rapidly evolving towards regions of exotic short-lived nuclei far from stability, nuclear astrophysics applications, and bridging the gap between low-energy QCD and the phenomenology of finite nuclei.
Bender, Bender, Bender, Bender, Bender, Bender, Bennaceur, Borzov, Buchinger, Carlson, Caurier, Caurier, Caurier, Caurier, Colò, Coló, D. Vretenar, Dracoulis, Duguet, Dukelsky, Entem, Fantoni, Finelli, Finelli, Garg, Goriely, Goriely, Goriely, Goriely, Grasso, Grasso, Hagino, Hammer, Heger, Hix, Hofmann, Hofmann, Honma, Kaiser, Kaiser, Keil, Keil, Khan, Kolbe, Krasznahorkay, Krasznahorkay, Langanke, Langanke, Langanke, Langanke, Langanke, Langanke, Leistenschneider, Liddick, Lunney, Matsuo, Michel, Michel, Michel, Michel, Navrátil, Navrátil, Navrátil, Nikšić, Nikšić, Otsuka, Otsuka, Paar, Paar, Perlinska, Piekarewicz, Pieper, Pieper, Pieper, Pietralla, Poves, Puglia, Rodríguez-Guzmán, Rodríguez-Guzmán, Rodríguez-Guzmán, Rodríguez-Guzmán, Ryezayeva, Sagawa, Samyn, Samyn, Shlomo, Sohler, Sorlin, Stoitsov, Suzuki, Terasaki, Tryggestad, Tsoneva, Typel, Typel, Valor, Vretenar, Vretenar, Vretenar, Vretenar, Vretenar, Vretenar, Wiringa, Zilges, Zuker, Zuker   +105 more
core   +2 more sources

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

FEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura, Shin‐ichi Tate, Kyota Yasuda   +2 more
wiley   +1 more source