Results 1 to 10 of about 2,885,310 (330)

Percolation in protein sequence space. [PDF]

open access: yesPLoS ONE, 2017
The currently known protein sequences are not distributed equally in sequence space, but cluster into families. Analyzing the cluster size distribution gives a glimpse of the large and unknown extant protein sequence space, which has been explored during
Patrick C F Buchholz   +2 more
doaj   +2 more sources

The scale-free nature of protein sequence space. [PDF]

open access: yesPLoS ONE, 2018
The sequence space of five protein superfamilies was investigated by constructing sequence networks. The nodes represent individual sequences, and two nodes are connected by an edge if the global sequence identity of two sequences exceeds a threshold ...
Patrick C F Buchholz   +2 more
doaj   +2 more sources

An Infinite System of Fractional Sturm–Liouville Operator with Measure of Noncompactness Technique in Banach Space

open access: yesMathematics, 2023
In the current contribution, an appropriate quantity connected to the space of all convergent sequences is provided and shown to be a measure of noncompactness in a Banach space.
Ahmed Salem   +2 more
doaj   +1 more source

New Banach Sequence Spaces Defined by Jordan Totient Function

open access: yesCommunications in Advanced Mathematical Sciences, 2023
In this study, a special lower triangular matrix derived by combining Riesz matrix and Jordan totient matrix is used to construct new Banach spaces. $\alpha-$,$\beta-$,$\gamma-$duals of the resulting spaces are obtained and some matrix operators ...
Uskan Devletli, Merve Ilkhan Kara
doaj   +1 more source

Applications of uniform boundedness principle to matrix transformations

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2023
Using the uniform boundedness principle of Maddox, we characterize matrix transformations from the space $(\ell_{p}) _{T}$ to the spaces $m(\phi )$ and $n(\phi )$ for the case $1\leq p\leq \infty$, which correspond to bounded linear operators.
M.A. Sarıgöl
doaj   +1 more source

A unified view of low complexity regions (LCRs) across species

open access: yeseLife, 2022
Low complexity regions (LCRs) play a role in a variety of important biological processes, yet we lack a unified view of their sequences, features, relationships, and functions.
Byron Lee   +2 more
doaj   +1 more source

100th Anniversary of Macromolecular Science Viewpoint: Opportunities in the Physics of Sequence-Defined Polymers [PDF]

open access: yes, 2020
Polymer science has been driven by ever-increasing molecular complexity, as polymer synthesis expands an already-vast palette of chemical and architectural parameter space.
Perry, Sarah L., Sing, Charles E.
core   +3 more sources

Population Disequilibrium as Promoter of Adaptive Explorations in Hepatitis C Virus

open access: yesViruses, 2021
Replication of RNA viruses is characterized by exploration of sequence space which facilitates their adaptation to changing environments. It is generally accepted that such exploration takes place mainly in response to positive selection, and that ...
Carlos García-Crespo   +13 more
doaj   +1 more source

A Genome of Temperate Enterococcus Bacteriophage Placed in a Space of Pooled Viral Dark Matter Sequences

open access: yesViruses, 2023
In the human gut, temperate bacteriophages interact with bacteria through predation and horizontal gene transfer. Relying on taxonomic data, metagenomic studies have associated shifts in phage abundance with a number of human diseases.
Ivan M. Pchelin   +7 more
doaj   +1 more source

Fractional Cesàro Matrix and its Associated Sequence Space

open access: yesConcrete Operators, 2021
In this research, we introduce a new fractional Cesàro matrix and investigate the topological properties of the sequence space associated with this matrix.We also introduce a fractional Gamma matrix aswell and obtain some factorizations for the Hilbert ...
Roopaei H., İlkhan M.
doaj   +1 more source

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