Results 81 to 90 of about 41,355 (258)

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

open access: yesFEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil   +3 more
wiley   +1 more source

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

open access: yesFEBS 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

Stone-type theorem on b-metric spaces and applications

open access: yesTopology and its Applications, 2015
A triple \((X,d,k)\) is called a \(b\)-metric space if \(X\) is a non-empty set, \(k\geq 1\) is a constant, and \(d: X\times X\to[0,+\infty)\) is a function satisfying (1) \(d(x,y)= 0\) if and only if \(x=y\), (2) \(d(x,y)= d(y, x)\), and (3) \(d(x, z)\leq k[d(x,y)+ d(y, z)]\) for all \(x,y,z\in X\). For \(k=2\), \(b\)-metric spaces were introduced by \
Tran Van An   +2 more
openaire   +1 more source

Metastatic niche shaped by host factors influences disseminated cancer cell fate

open access: yesFEBS Letters, EarlyView.
Metastasis is shaped not only by cancer cells but also by the environments they encounter. This review explores how factors such as aging, diet, the microbiome, lifestyle, and environmental exposures remodel organ‐specific niches in the lung, liver, bone, and brain, influencing where metastatic cells survive, remain dormant, or grow, and ultimately ...
Gwennan Delyth Ward   +2 more
wiley   +1 more source

Fuzzy Cone B-Metric Spaces

open access: yes, 2019
The first two authors would like to thank TUBITAK (The Scientific and Technological Research Council of Turkey) for its financial support during their doctorate studies.
POŞUL, Hande   +2 more
openaire   +3 more sources

Smaller is better: nanobodies meet NMR

open access: yesFEBS Letters, EarlyView.
Nanobodies are single‐domain antigen‐binding fragments derived from camelid heavy chain antibodies. Their small size, high stability, and exceptional specificity make nanobodies uniquely useful probes for NMR studies of protein dynamics, transient conformational states, and protein–protein interactions.
Oleg Y. Dmitriev
wiley   +1 more source

Convex contractions on extended $ b $-metric spaces

open access: yesAIMS Mathematics
<abstract><p>This research investigated different types of convex contractions in the setting of extended $ b $-metric spaces from the point of view of the existence and uniqueness of their fixed points. The assumptions imposed on involved mappings refer to convexity of order $ 2 $, two-sided convexity or Ćirić-type convexity, which also ...
openaire   +2 more sources

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

open access: yesFEBS 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

Various Suzuki type theorems in b -metric spaces

open access: yesJournal of Nonlinear Sciences and Applications, 2015
Summary: In this paper, we prove some fixed point results for \(\alpha\)-admissible mappings which satisfy Suzuki type contractive condition in the setup of \(b\)-metric spaces. Finally, examples are presented to verify the effectiveness and applicability of our main results.
Latif, A.   +3 more
openaire   +3 more sources

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