Results 61 to 70 of about 10,903 (206)

Natural Products Targeting the EGFR/HER2 Axis in Tumorigenesis: Interpretation of Molecular Mechanisms and Recent Insights Into Synergistic Strategies for Cancer Therapy

open access: yesFood Frontiers, Volume 7, Issue 1, January 2026.
Schematic overview illustrating the anticancer mechanisms of selected natural products (resveratrol, quercetin, berberine) targeting EGFR and HER2 signaling pathways in tumor cells. These compounds inhibit receptor activation and downstream oncogenic cascades, including PI3K/Akt/mTOR, MAPK/ERK, and STAT3 pathways.
Iman Ramli   +8 more
wiley   +1 more source

Hoogsteen base pairs proximal and distal to echinomycin binding sites on DNA [PDF]

open access: yes, 1987
Forms of the DNA double helix containing non-Watson-Crick base-pairing have been discovered recently based on x-ray diffraction analysis of quinoxaline antibiotic-oligonucleotide complexes.
Dervan, Peter B., Mendel, David
core   +2 more sources

The V‐Shaped Hamilton Receptors: A Paradigmatic Multipurpose Scaffold

open access: yesChemistryOpen, Volume 15, Issue 1, January 2026.
This manuscript explores the historical context and significance of molecular recognition in relation to Hamilton‐type receptors. It concludes with a discussion on future prospects for the development of novel functionalized Hamilton‐type receptors. It is hoped that this collection will offer new insights and directions for the supramolecular chemistry
Shafieq Ahmad Wagay, Rashid Ali
wiley   +1 more source

Development of a high-throughput strategy for discovery of potent analogues of antibiotic lysocin E

open access: yesNature Communications, 2019
The depsipeptide Lysocin E has antibacterial activity against methicillin-resistant Staphylococcus aureus. Here, the authors developed a high-throughput one-bead-on-compound method for the synthesis and screening lysocin E derivatives, with several hits ...
Hiroaki Itoh   +7 more
doaj   +1 more source

Exploring the sequence space of unknown oligomers and polymers

open access: yesCell Reports Physical Science, 2021
Summary: The characterization of the chemistry of life on earth has been facilitated by developments in analysis and sequencing of bio-oligomers using tandem mass spectrometry (MS/MS).
David Doran   +5 more
doaj   +1 more source

A contribution to the nomenclature of depsipeptides [PDF]

open access: yesJournal of Peptide Science, 2003
AbstractDepsipeptides, also called peptolides, are a class of peptidic compounds in which an amide bond has been replaced with an ester bond. The literature does not clearly display rules for the nomenclature of such compounds. Here a method is proposed to transcribe drawn depsipeptide structures in one‐line text.
Sorin V, Filip, Florine, Cavelier
openaire   +2 more sources

Molecular characterization of enterococci harboring genotype and phenotype incongruence related to glycopeptide resistance isolated in Brazilian hospitals [PDF]

open access: yes, 2008
Three Enterococcus faecalis and one Enterococcus faecium strains were characterized by plasmid profile, pulsed-field gel electrophoresis (PFGE) and determination of antimicrobial minimal inhibitory concentrations. VanA elements were characterized by Long
DARINI, Ana Lucia da Costa   +3 more
core   +3 more sources

Robust Synthesis of Prebiotic Precursors in Drying Reactions of Amino Acids and Keto Acids

open access: yesChemSystemsChem, Volume 8, Issue 1, January 2026.
Drying conditions drive reactions between amino acids and keto acids, generating a wide variety of small, reactive species, highlighting for the first time the potential significance of drying reactions in proto‐metabolism on early Earth. Condensation‐dehydration reactions are critical to both metabolism and polymerization in extant biology, and their ...
Eliav Marland   +7 more
wiley   +1 more source

Consecutive isocyanide-based multicomponent reactions: synthesis of cyclic pentadepsipeptoids

open access: yesBeilstein Journal of Organic Chemistry, 2014
The synthesis of six cyclic depsipeptoids inspired by the natural depsipeptide sansalvamide A is described. An efficient and fast synthetic strategy was developed using a combination of consecutive isocyanide-based multicomponent reactions (Ugi and ...
Angélica de Fátima S. Barreto   +3 more
doaj   +1 more source

SB-224289 Antagonizes the Antifungal Mechanism of the Marine Depsipeptide Papuamide A.

open access: yesPLoS ONE, 2016
In order to expand the repertoire of antifungal compounds a novel, high-throughput phenotypic drug screen targeting fungal phosphatidylserine (PS) synthase (Cho1p) was developed based on antagonism of the toxin papuamide A (Pap-A).
Chelsi D Cassilly   +6 more
doaj   +1 more source

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