Results 41 to 50 of about 1,610 (169)

Binding affinities of folic acid and related pterins with biological macromolecules under physiological conditions

open access: yesPteridines, 2015
Folic acid and pterin derivatives are important heterocyclic compounds found in a variety of biological systems and have been shown to be photochemically active. Understanding the amount of binding that various pterins have with biological macromolecules
Soniat Michael, Martin Christopher B.
doaj   +1 more source

Deciphering Cold Stress Resilience: Multiomics Insights in Contrasting Wheat Genotypes From the Western Himalayas

open access: yesPlant Biotechnology Journal, EarlyView.
ABSTRACT Cold stress threatens wheat productivity, particularly in regions with extreme climatic conditions. To elucidate the molecular mechanisms underlying wheat's response to cold stress, we performed a multiomics analysis integrating lipidomics, transcriptomics, proteomics and metabolomics.
Sofora Jan   +15 more
wiley   +1 more source

Biochemistry and biosynthesis of insect pigments

open access: yesEuropean Journal of Entomology, 2014
The functional role and commercial importance of insect pigments have been studied for well over a century. They are classified into those synthesized by insects, which include anthraquinones, aphins, pterins, tetrapyrroles, ommochromes, melanins and ...
Gulsaz SHAMIM   +3 more
doaj   +1 more source

Protection and Delivery of Phytochemicals from Passive Encapsulation to Guaranteed Self‐Assembly Induced by Amyloid Template for Chronic Disease Prevention via Modulating Microbial‐Host Crosstalk

open access: yesAdvanced Science, Volume 13, Issue 21, 13 April 2026.
ABSTRACT The rising incidence of chronic diseases globally has drawn widespread attention to phytochemicals, which exert targeted preventive and alleviating effect by modulating gut microbiota; thus, a potential strategy for precision nutritional interventions is offered.
Shiqi Bai   +6 more
wiley   +1 more source

Tetrahydrobiopterin (Bh4) deficiencies: diagnosis and treatment

open access: yesActa Pediátrica de México, 2014
Tetrahydrobiopterin (BH4) is an enzyme cofactor of phenylalanine hydroxylase, tyrosine hydroxylase and tryptophan hydroxylase. Three different enzymes affect BH4 synthesis: guanosine triphosphate cyclohydrolase I (GTP CH 1), 6-piruvoil tetrahydropterin ...
Mercedes Martínez-Pardo
doaj   +1 more source

Ultraviolet-induced fluorescent imaging for millipede taxonomy [PDF]

open access: yesResearch Ideas and Outcomes, 2017
Fluorescent imaging has been traditionally applied to cell biology, and more recently to entomology to capture microscopic images of insect anatomy. However, the technique has not been applied to the study of millipedes, most of which autofluoresce as a ...
Paul Marek
doaj   +2 more sources

Dual Antimicrobial–Antioxidant Postbiotics From Lactiplantibacillus plantarum for Clean‐Label Meat Preservation

open access: yeseFood, Volume 7, Issue 2, April 2026.
The postbiotics, which possess both antimicrobial and antioxidant activities, are derived from Lactiplantibacillus plantarum strains, revealing the presence of bioactive compounds. Functional assays showed strong antioxidant activity and strain‐specific antimicrobial effects. When applied to pork, these postbiotics significantly reduced microbial loads,
Florentina Badea   +8 more
wiley   +1 more source

Comprehensive Analysis of Structure Activity Relationships in Quinoxaline Derivatives Covering Antimicrobial Applications

open access: yesChemistrySelect, Volume 11, Issue 14, 13 April 2026.
ABSTRACT Antimicrobial resistance (AMR) has emerged as one of the most critical global health challenges, undermining the clinical efficacy of existing antibiotics and threatening modern therapeutic strategies. The ongoing misuse and overuse of antimicrobial agents have accelerated the evolution of resistant bacterial strains and parasites ...
Subham Kumar Vishwakarma   +2 more
wiley   +1 more source

Investigation of Spectra and Ionization Constants of 8-Alkyl Pterins by Fluorimetry

open access: yesPteridines, 1993
Spectrofluorimetric studies of the properties of 8-alkyl-pterins arc reported, together with preliminary results on the use of fluorimetry in studying the binding of these new mechanism-based substrates to dihydrofolate reductase (DHFR).
Jeong Soon-Seog   +2 more
doaj   +1 more source

Pterins as Sensors of Response to the Application of Fe3+-Dextran in Piglets

open access: yesSensors, 2010
The aim of the presented study was to assess the effect of a single administration of Fe3+-dextran on immune cell counts and pterin biomolecule production as novel sensors of the piglets' immune system activation, and to determine concentrations of ...
Klara Breinekova   +2 more
doaj   +1 more source

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