Results 1 to 10 of about 160 (129)

A model to understand type I oxidations of biomolecules photosensitized by pterins

open access: yesJournal of Photochemistry and Photobiology, 2021
Photosensitized oxidations, in part responsible for the harmful effect of UV and visible radiation on biological systems, can take place through type I (generation of radicals) and type II (singlet oxygen) mechanisms.
Carolina Lorente   +2 more
exaly   +3 more sources

Pterin function in bacteria [PDF]

open access: yesPteridines, 2017
Pterins are widely conserved biomolecules that play essential roles in diverse organisms. First described as enzymatic cofactors in eukaryotic systems, bacterial pterins were discovered in cyanobacteria soon after.
Feirer Nathan, Fuqua Clay
doaj   +2 more sources

Electron Transfer Initiated Reactions Photoinduced by Pterins

open access: yesPteridines, 2011
Interest in the photochemistry and photophysics of pterins has increased since the participation of this family of compounds in different photobiological processes has been suggested or demonstrated in recent decades.
Carolina Lorente   +2 more
exaly   +2 more sources

Determination of Urinary Pterins by Capillary Electrophoresis Coupled with LED-Induced Fluorescence Detector

open access: yesMolecules, 2019
Urinary pterins have been found as potential biomarkers in many pathophysiological conditions including inflammation, viral infections, and cancer. However, pterins determination in biological samples is difficult due to their degradation under exposure ...
Wojciech Grochocki   +2 more
exaly   +3 more sources

CSF Amino Acids, Pterins and Mechanism of the Ketogenic Diet

open access: yesPediatric Neurology Briefs, 2015
Investigators from Hospital Sant Joan de Deu, Barcelona, Spain, studied the relationship between the etiology of refractory childhood epilepsy, CSF neurotransmitters, pterins, and amino acids, and response to a ketogenic diet in 60 patients with ...
J Gordon Millichap, Millichap J Gordon
exaly   +3 more sources

Pushing at the Boundaries of Pterin Chemistry

open access: yesMolecules
Pterins are molecules of substantial interest as they occur in nature in a number of forms with quite distinct and often indispensable roles. Chemically, the synthesis of the principle pterin scaffold is comparably simple, while the insolubility of the ...
Jevy V. Correia   +2 more
doaj   +3 more sources

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
Michael M Soniat, Christopher B Martin
exaly   +2 more sources

Analysis of Catecholamines and Pterins in Inborn Errors of Monoamine Neurotransmitter Metabolism—From Past to Future

open access: yesCells, 2019
Inborn errors of monoamine neurotransmitter biosynthesis and degradation belong to the rare inborn errors of metabolism. They are caused by monogenic variants in the genes encoding the proteins involved in (1) neurotransmitter biosynthesis (like tyrosine
Sabine Jung-Klawitter   +1 more
exaly   +3 more sources

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).
Paul Wormell, Jill E Gready
exaly   +2 more sources

Synthesis, Redox and Spectroscopic Properties of Pterin of Molybdenum Cofactors

open access: yesMolecules, 2022
Pterins are bicyclic heterocycles that are found widely across Nature and are involved in a variety of biological functions. Notably, pterins are found at the core of molybdenum cofactor (Moco) containing enzymes in the molybdopterin (MPT) ligand that ...
Kyle J. Colston, Partha Basu
doaj   +1 more source

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