Results 91 to 100 of about 122,748 (264)

Wilf Classes for Level Sequences Avoiding Patterns of Length Three

open access: yesMathematics
A level sequence is a word π=π1π2…πn over the set of nonnegative integers such that π1=0 and πi≤1+lev(π1π2…πi−1) for i=2,3,…,n, where lev(π1π2…πm) is the number of levels in the word π1π2…πm, that is, the number of two entry factors πjπj+1 such that πj ...
Toufik Mansour
doaj   +1 more source

On bijections for pattern-avoiding permutations

open access: yesJournal of Combinatorial Theory, Series A, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jonathan Bloom, Dan Saracino
openaire   +2 more sources

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Identification of a Shiga toxin A‐derived peptide internalized into Gb3 receptor‐bearing cells via interaction with the Shiga toxin B subunit

open access: yesFEBS Letters, EarlyView.
The process of internalization of the Shiga toxin A subunit via formation of a complex with the Shiga toxin B subunit, which specifically binds to the Gb3 receptor. The peptide is designed to act as a carrier of drugs into cancer cells. Here, we explored the potential of peptides derived from the catalytic A subunit of Shiga toxin (STxA) to be drug ...
Giulia Opassi   +6 more
wiley   +1 more source

Investigating transcription factor dynamics in health and disease using FRAP

open access: yesFEBS Letters, EarlyView.
FRAP analysis of GFP‐tagged transcription factors reveals how molecular mobility and target engagement change in response to drug treatment. By combining live‐cell imaging, quantitative model fitting, and statistical analysis, this approach uncovers transcription factor dynamics linked to disease mechanisms, providing a powerful framework for ...
Kannan Govindaraj   +3 more
wiley   +1 more source

Pattern avoidance and the Bruhat order

open access: yesJournal of Combinatorial Theory, Series A, 2007
The structure of order ideals in the Bruhat order for the symmetric group is elucidated via permutation patterns. A method for determining non-isomorphic principal order ideals is described and applied for small lengths. The permutations with boolean principal order ideals are characterized.
openaire   +2 more sources

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

A catalanization map on the symmetric group [PDF]

open access: yesEnumerative Combinatorics and Applications, 2022
Mahir Bilen Can   +2 more
doaj   +1 more source

Range Sensor-Based Efficient Obstacle Avoidance through Selective Decision-Making

open access: yesSensors, 2018
In this paper, we address a collision avoidance method for mobile robots. Many conventional obstacle avoidance methods have been focused solely on avoiding obstacles. However, this can cause instability when passing through a narrow passage, and can also
Youngbo Shim, Gon-Woo Kim
doaj   +1 more source

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