Results 61 to 70 of about 60,411 (268)

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

Non global solutions for non-radial coupled inhomogeneous non-linear Schrödinger systems

Boundary Value Problems
We establish finite-time blow-up of energy solutions to an inhomogeneous nonlinear coupled Schrödinger system under suitable conditions. The novelty of our approach lies in allowing non-radial initial data and removing the assumption of finite variance ...
Saleh Almuthaybiri, Radhia Ghanmi, Tarek Saanouni   +2 more
doaj   +1 more source

On the Coalgebra of Partial Differential Equations.

, 2019
We note that the coalgebra of formal power series in commutative variables is final in a certain subclass of coalgebras. Moreover, a system Sigma of polynomial PDEs, under a coherence condition, naturally induces such a coalgebra over differential polynomial expressions.
openaire   +4 more sources

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

FEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson, Tomáš Gedeon, Mauricio Garcia Benitez, Campbell Putnam, William R. Harcombe, Radhakrishnan Mahadevan, Ashley E. Beck   +6 more
wiley   +1 more source

Global solutions for bi-harmonic inhomogeneous non-linear Schrödinger equations in Lebesgue spaces

Journal of Inequalities and Applications
This paper studies the inhomogeneous bi-harmonic nonlinear Schrödinger equation i u ˙ + Δ 2 u ± | x | − τ | u | p − 1 u = 0 , $$ \mbox{i}\dot{u} +\Delta ^{2} u\pm |x|^{-\tau}|u|^{p-1}u=0, $$ where u : = u ( t , x ) : R × R N → C $u:=u(t,x):\mathbb{R ...
Radhia Ghanmi, Salah Boulaaras, Tarek Saanouni   +2 more
doaj   +1 more source

ON SINGULAR SOLUTIONS OF CLAIRAUT EQUATIONS IN THE THEORY OF ORDINARY DIFFERENTIAL AND PARTIAL DERIVATIVE EQUATIONS

Известия высших учебных заведений. Поволжский регион: Физико-математические науки, 2020
Background. There is no problem in finding a general solution to the ordinary differential Clairaut equation. The corresponding procedure is described in details in the theory of ordinary differential equations.
L. A. Zhidova
doaj   +1 more source

Electron transfer between complexes III and IV in S. cerevisiae mitochondrial membranes

FEBS Letters, EarlyView.
Mitochondrial oxidative phosphorylation in S. cerevisiae mitoplasts is limited by complex IV catalytic capacity, rather than two‐dimensional cytochrome c diffusion. At physiological cytochrome c : supercomplex ratios at salinity equivalent to that of 20 mm monovalent salt, activity is maximized, indicating that this low ionic strength accurately mimics
Ana Paula Lobez, Mikael Oliveberg, Peter Brzezinski   +2 more
wiley   +1 more source

A Primal–Dual Interior Point Method for Complex–Variable Optimization Problems

International Journal of Applied Mathematics and Computer Science
In this paper, we propose a primal-dual interior-point method for solving convex optimization problems with complex variables, relying on a newly defined complex-valued kernel function.
Laouar Mounia, Brahimi Mahmoud, Ziadi Raouf, Saleh Mohammed A., Almaymuni Abdulgader Z., Alhalangy Abdalilah   +5 more
doaj   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

FEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace, Alyssa Borges, Charles Arnaud, Tove Karlsson, Nina K. Bröker, Stefanie Barbirz, Marta Bally   +6 more
wiley   +1 more source

Inhomogeneous Schrödinger system with inverse square potential in three space dimensions

Journal of Inequalities and Applications
This work studies the inhomogeneous Schrödinger coupled system with inverse square potential i ∂ t u j + Δ u j − λ | x | 2 u j = ± | x | − τ ( ∑ k = 1 m a j k | u k | p ) | u j | p − 2 u j . $$ i\partial _{t} u_{j} +\Delta u_{j}-\frac{\lambda}{|x|^{2}}u_{
Salah Boulaaras, Radhia Ghanmi, Tarek Saanouni   +2 more
doaj   +1 more source