Results 61 to 70 of about 39,209 (265)

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

Some Innovative Results for Interpolative Reich–Rus–Ćirić-Type Contractions in Rectangular m-Metric Spaces

Axioms
In this paper, we study the existence of fixed points for interpolative Reich–Rus–Ćirić-type contractions in the setting of rectangular m-metric spaces. The use of the rectangular inequality, in place of the conventional triangle inequality, introduces a
Muhammad Zahid, Ali Raza, Safeer Hussain Khan   +2 more
doaj   +1 more source

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

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

Analysis of the Regularity of a Measurement on a Metric Space

Asian Research Journal of Mathematics
The aim of this study is to demonstrate that, although it is difficult to provide a precise and exhaustive description of Borel sigma-algebra, it is often possible to frame the measure of any Borel set with arbitrary precision. That is, for any given Borel set, one can identify an open set that contains it and a closed (or compact) set that encompasses
Emilien LORANU LONDJIRINGA, Camile LIKOTELO BINENE, Grâce NKWESE MAZONI, Christian AMINI HURUMA, Cauchy MBAKAS'A KONGOLO, Fidele MUAKU MVUNZI   +5 more
openaire   +1 more source

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

FEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

Sharp Best Proximity Point Results for Multivalued Operators in Extended Rectangular b-Metric Spaces

International Journal of Mathematics and Mathematical Sciences
In this paper, we propose a novel extension of generalized distance, which we call the θ-extended rectangular b-generalized pseudo-distance. This new concept generalizes and unifies several known notions of distance by incorporating a parameter θ, along ...
Cholatis Suanoom, Natthaphon Artsawang
doaj   +1 more source

Convergence results for controlled contractions and applications to a system of Volterra integral equations

Applied Mathematics in Science and Engineering
This work presents the concept of controlled dislocated metric spaces, and the Banach contraction principle in these spaces is examined. Next, we provide extensive examples of numerical convergence of fixed points to demonstrate the practical ...
Lifang Guo, Mudasir Younis, Haroon Ahmad, Mahpeyker Özturk, Fahim Ud Din, Shahbaz Ahmad   +5 more
doaj   +1 more source

Modelling stem cell differentiation related processes—A practical overview for biologists

FEBS Letters, EarlyView.
Stem cell differentiation is complex and difficult to control experimentally. This review introduces suitable computational modelling approaches that can support stem cell research, from mechanistic ODE and abstract models to multiscale and deep learning methods.
Ricco Zeegelaar, Xinqi Yan, Lucas F. Jansen Klomp, Stefano Schivo, Janine N. Post   +4 more
wiley   +1 more source

Design and analysis strategies for robust microbiome ageing research

FEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik, İsmail Güderer, Yi Wang, Tayyaba Alvi, Prasoon Pandey, Handan Melike Dönertaş   +5 more
wiley   +1 more source