Results 31 to 40 of about 1,595 (174)
Photosensitization of peptides and proteins by pterin derivatives
Pteridines, 2017 Proteins are one of the preferential targets of the photosensitized damaging effects of ultraviolet (UV) radiation on biological system. Pterins belong to a family of heterocyclic compounds, which are widespread in living systems and participate in ...
Dantola Maria Laura +5 more
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Theoretical Study on the Relative Energies of Anionic Pterin Tautomers
Pteridines, 2009 Pterins exist as several tautomeric forms and behave as weak acids in aqueous solutions. Therefore, several acidbase equilibria may be present. For several pterin derivatives, the range of the experimental pKa lies in the range 6-8.
Soniat Michael, Martin Christopher B.
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Body coloration and mechanisms of colour production in Archelosauria: the case of deirocheline turtles [PDF]
Royal Society Open Science, 2019 Animal body coloration is a complex trait resulting from the interplay of multiple mechanisms. While many studies address the functions of animal coloration, the mechanisms of colour production still remain unknown in most taxa.
Jindřich Brejcha +7 more
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2D van der Waals System Integrated with Targeting Radio‐Diagnostic and Imaging Functions
Small, EarlyView.Layered double hydroxide (LDH) nanoplates were engineered for tumor‐targeted imaging and therapy. By exploiting folate receptor (FR) expression levels, the system achieves selective tumor accumulation and high‐resolution dual PET/fluorescence (PET/FL) imaging.
Sairan Eom +6 more
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Pteridines XCVIII. Synthesis and Properties of 1-Methylpterins
Pteridines, 1993 A series of 1-methyl-pterin derivatives (6-13) have been synthesized by condensation and methylation reactions. The compounds have been characterized by elemental analyses, pKa deterimations and UV spectra.
Pfleiderer Wolfgang
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Journal of Inherited Metabolic Disease, Volume 49, Issue 2, March 2026.ABSTRACT The correct diagnosis of tetrahydrobiopterin (BH4, sapropterin dihydrochloride)‐responsive phenylketonuria (PKU) and treatment with BH4 are important for prognosis and quality of life. We examined whether age affects biopterin bioavailability following oral BH4 administration in PKU and whether this influences BH4 responsiveness.
Kana Kitayama +5 more
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New Zealand Journal of Botany, Volume 64, Issue 1, March 2026.Central Asia harbors a rich yet understudied assemblage of wood‐inhabiting Hymenochaetoid fungi. This review delivers the first comprehensive synthesis of 43 poroid species representing 18 genera documented across montane forests, steppes, and xeric habitats.
Yusufjon Gafforov +16 more
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Pteridines, 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.
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Molecular Ecology, Volume 35, Issue 1, January 2026.ABSTRACT Colour polytypism represents an example of phenotypic diversification shaped by genetic divergence and ecological pressures. Poison frogs of the genus Oophaga (Dendrobatidae) are highly polytypic in coloration, making them an ideal system for investigating the genetic and physiological basis of colour variation.
Vasiliki Mantzana‐Oikonomaki +7 more
wiley +1 more source
Biochemistry and biosynthesis of insect pigments
European 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
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