Results 71 to 80 of about 9,494,908 (294)

On Polynomial Invariants of Exceptional Simple Algebraic Groups [PDF]

, 1999
We study polynomial invariants of systems of vectors with respect to exceptional simple algebraic groups in their minimal linear representations. For each type we prove that the algebra of invariants is integral over the subalgebra of trace polynomials ...
Iltyakov, A.V., Elduque, A. [0000-0002-6497-2162], A. V. Iltyakov, A. Elduque   +3 more
core   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

FEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

Local systems and simple groups

, 2020
We will discuss recent joint work of Nick Katz and the speaker on local systems on the affine line in characteristic p, whose monodromy groups are certain finite (almost quasi)simple groups.Non UBCUnreviewedAuthor affiliation: University of ...
Tiep, Pham Huu
core   +1 more source

On tensor squares of irreducible representations of almost simple groups. I

Моделирование и анализ информационных систем, 2011
Almost simple SM_m-groups are considered. A group G is called a SM_m-group if the tensor square of any irreducible representation is decomposed into the sum of its irreducible representations with multiplicities not greater than m.
S. V. Polyakov
doaj  

Artificial molecular machines and motors—Design and control of nanoscale motion

FEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

Infinite groups with fixed point properties

, 2007
We construct finitely generated groups with strong fixed point properties. Let Xac be the class of Hausdorff spaces of finite covering dimension which are mod–p acyclic for at least one prime p.
G. Arzhantseva, T. Januszkiewicz, Arzhantseva, Goulnara, I. J. Leary, Minasyan, Ashot, A. Minasyan, Bridson, MR, Januszkiewicz, T, J. Świa̧tkowski, Bridson, Martin R., Leary, IJ, Swiatkowski, J, Bridson, Martin Robert, Ian J Leary, Martin R Bridson, ASHOT MINASYAN, JACEK ŚWIA̧TKOWSKI, et al., Januszkiewicz, Tadeusz, Leary, Ian J., Bridson, Martin, Arzhantseva, Goulnara N., Minasyan, A, Swiatkowski, Jacek, Arzhantseva, G, M. R. Bridson   +23 more
core   +1 more source

On localizations of quasi-simple groups with given countable center

, 2020
A group homomorphism i:H→G is a localization of H, if for every homomorphism φ:H→G there exists a unique endomorphism ψ:G→G such that iψ=φ (maps are acting on the right). Göbel and Trlifaj asked in [18, Problem 30.4(4), p.
Flores Díaz, Ramón Jesús, Rodríguez, José Luis   +1 more
core   +1 more source

Invisible but not inaccessible—Revealing transient oligomers formed by intrinsically disordered proteins with solution NMR and complementary methods

FEBS Letters, EarlyView.
Transient oligomers formed by intrinsically disordered proteins may be ‘invisible’ to direct detection yet remain accessible to solution NMR through equilibrium‐exchange measurements and pressure‐jump experiments. Complementary methods report on mass, stoichiometry, selected distance distributions, morphology, and internal packing.
Martin D. Gelenter, Ad Bax
wiley   +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