Results 111 to 120 of about 2,884,547 (321)

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

open access: yesFEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

On common fixed and periodic points of commuting functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1998
It is known that two commuting continuous functions on an interval need not have a common fixed point. It is not known if such two functions have a common periodic point. In this paper we first give some results in this direction.
Aliasghar Alikhani-Koopaei
doaj   +1 more source

Common Fixed Points under Strict Contractive Conditions

open access: yesJournal of Mathematical Analysis and Applications, 2000
Let \((X,d)\) be a metric space and \(f,g:X\to X\) two mappings. The authors present some common fixed point theorems, for \(f\) and \(g\), under strict contractive conditions by using a minimal commutativity condition.
Pant, R. P., Pant, V.
openaire   +2 more sources

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

open access: yesFEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe   +3 more
wiley   +1 more source

Common fixed points versus invariant approximation for noncommutative mappings

open access: yesJournal of Numerical Analysis and Approximation Theory, 2008
The aim of this paper is to obtain common fixed points as invariant approximation for noncommuting two pairs of mappings. As consequences, our works generalize the recent works of Nashine [9] by weakening commutativity hypothesis and by increasing the ...
Hemant Kumar Nashine
doaj   +2 more sources

Common fixed points for ($ \kappa _{G_{m}} $)-contractions with applications

open access: yesAIMS Mathematics
In this publication, our objective was to introduce and establish the concepts of $ \kappa _{G_{m}} $-contraction and generalized $ (\alpha, \kappa _{G_{m}}) $-contraction in complete $ G_{m} $-metric spaces, which led to the discovery of novel fixed ...
Jamshaid Ahmad   +3 more
doaj   +1 more source

The role of histone modifications in transcription regulation upon DNA damage

open access: yesFEBS Letters, EarlyView.
This review discusses the critical role of histone modifications in regulating gene expression during the DNA damage response (DDR). By modulating chromatin structure and recruiting repair factors, these post‐translational modifications fine‐tune transcriptional programmes to maintain genomic stability.
Angelina Job Kolady, Siyao Wang
wiley   +1 more source

On a fixed point theorem of Fisher and Sessa

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1990
A fixed point theorem of Fisher and Sessa is generalized by replacing the requirements of commutativity and nonexpansiveness by compatibility and continuity respectively.
Gerald Jungck
doaj   +1 more source

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