Results 41 to 50 of about 803,233 (296)

Supramolecular umpolung: converting electron-rich resorcin[4]arenes into potent CH-bonding anion receptors and transporters [PDF]

open access: yes, 2023
CH-hydrogen bonding anion receptors constitute an emerging class of anion sensors and transporters which, owing to their proteolytic and pH resistance, have great potential for biological applications. However, CH groups, being weak hydrogen bond donors,
Piotr, Cmoch   +6 more
core   +2 more sources

Design Principles and Applications of Selective Lanthanide-Based Receptors for Inorganic Phosphate

open access: yesFrontiers in Chemistry, 2022
Phosphate is an anion of both environmental and medical significance. The increase in phosphate levels in surface waters due primarily to run-offs from fertilized agricultural fields causes widespread eutrophication and increasingly large dead-zones ...
Valérie C. Pierre, Randall K. Wilharm
doaj   +1 more source

Anion Recognition by Charge Neutral Electron-deficient Arene Receptors

open access: yesCHIMIA, 2011
Anion-? interactions are newly emerging non-covalent interactions and have attracted considerable attention from both theoreticians and supramolecular chemists.
De-Xian Wang, Mei-Xiang Wang
doaj   +1 more source

Bidentate Urea Derivatives of p-tert-Butyldihomooxacalix[4]arene: Neutral Receptors for Anion Complexation

open access: yes, 2014
Three new bidentate ureidodihomooxacalix[4]- arene derivatives (phenyl 5a, n-propyl 5b, and tert-butyl 5c) were synthesized in four steps from the parent compound ptert- butyldihomooxacalix[4]arene and obtained in the cone conformation, as shown by NMR ...
Teixeira, Filipa A.   +6 more
core   +1 more source

A Synthetic Supramolecular Receptor for the Hydrosulfide Anion [PDF]

open access: yesAngewandte Chemie, 2016
AbstractHydrogen sulfide (H2S) has emerged as a crucial biomolecule in physiology and cellular signaling. Key challenges associated with developing new chemical tools for understanding the biological roles of H2S include developing platforms that enable reversible binding of this important biomolecule.
Hartle, Matthew D   +7 more
openaire   +7 more sources

The heterodimeric amino acid transporters (HAT) of the SLC7/SLC3 family: A structure−function relationships and relevance to human pathology

open access: yesFEBS Letters, EarlyView.
Heterodimeric amino acid transporters consist of SLC7 and SLC3 family proteins arranged in a conserved structural organization. They regulate nutrient transport across cell membranes, supporting essential cellular functions. These transporters also contribute to xenobiotic/drug uptake and distribution.
Mariafrancesca Scalise   +5 more
wiley   +1 more source

Reconnoitering the dynamics-calix[4]pyrrole: A heights in research and technology

open access: yesResults in Chemistry, 2023
Calix[4]pyrrole has potential applications as a molecular recognition receptor, sensor, ditopic cation, and anion receptor. Other supramolecular receptors could be made using novel approaches inspired by the mechanism and selectivity of these receptors ...
Bhavesh Dhumale   +3 more
doaj   +1 more source

The VHL tumor suppressor at the crossroad of protein folding, aggregation, and cancer

open access: yesMolecular Oncology, EarlyView.
Mutations, environmental stress, and chaperone dysfunction can destabilize pVHL, promoting its conversion from the native folded state into amyloid‐like assemblies. This transition may contribute to protein storage, cell dormancy, survival, and drug resistance.
Lara Abad   +2 more
wiley   +1 more source

Extracellular vesicle lipidomics liquid biopsy reveals systemic and tumor microenvironment metabolic reprogramming in ovarian cancer

open access: yesMolecular Oncology, EarlyView.
Extracellular vesicle (EV) lipidomic profiling of plasma and ascites from patients with high‐grade serous ovarian cancer and of ovarian cancer cell lines reveals enrichment of triglycerides (TGs), diacylglycerols (DGs), phosphatidylcholine (PCs), sphingomyelins (SMs), reflecting tumor metabolic reprogramming.
Shikha Rani   +9 more
wiley   +1 more source

Crystal structure of a host–guest complex of the tris-urea receptor, 3-(4-nitrophenyl)-1,1-bis{2-[3-(4-nitrophenyl)ureido]ethyl}urea, that encapsulates hydrogen-bonded chains of dihydrogen phosphate anions with separate tetra-n-butylammonium counter-ions

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2019
The title compound, C25H25N9O9·C16H36N+·H2PO4− (I) or (C25H25N9O9)·(n-Bu4N+)·(H2PO4−) (systematic name: 3-(4-nitrophenyl)-1,1-bis{2-[3-(4-nitrophenyl)ureido]ethyl}urea tetrabutylammonium dihydrogen phosphate), comprises a tris-urea receptor (R), a ...
Ruyu Wang   +6 more
doaj   +1 more source

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