Results 51 to 60 of about 7,557 (234)
Plasma Levels of Neopterin and Biopterin in the Umbilical Vessels and the Maternal Vein
Pteridines, 2003 Tetrahydrobiopterin (BH4) is a highly bioactive pterin required for nitric oxide synthase and monooxygenases of aromatic amino acids, and is involved in the synthesis of nitric oxide, catecholamines and Serotonin.
Iwanaga Naoko +8 more
doaj +1 more source
Inhibitory Effects of Pteridines on the Cytochrome P-450 Enzyme System
Pteridines, 1997 The effects of 17 different pteridine derivatives on rat liver microsomal cytochrome P-450 catalyzed degradation of aminoantipyrin were studied.
Horejsi Renate +5 more
doaj +1 more source
Molecular architecture of pterin deaminase from Saccharomyces cerevisiae NCIM 3458
Pteridines, 2017 As early as 1974, reports have confirmed the anticancer activity of pterin deaminase isolated from fungi. The enzyme has also been reported in bacteria, fungi and slime mold genera, but the enzyme characterization was effetely done.
Murugesan Thandeeswaran +7 more
doaj +1 more source
Quantification of Live Bacterial Sensing for Chemotaxis and Phagocytosis and of Macropinocytosis
Frontiers in Cellular and Infection Microbiology, 2018 Initial immunological defense mechanisms to pathogen invasion rely on innate pathways of chemotaxis and phagocytosis, original to ancient phagocytes. Although chemotaxis has been well-studied in mammalian and model systems using purified chemoattractants
Netra P. Meena, Alan R. Kimmel
doaj +1 more source
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.
doaj +1 more source
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Animal coloration serves a variety of visually related functions in nature (e.g. mate choice, aposematism and camouflage) but the pigments in integumentary tissues such as skin, scales and feathers may also serve functions unrelated to the visual environment (e.g ...
Beth A. Reinke +2 more
wiley +1 more source
PLoS Genetics, 2021 Birds exhibit striking variation in eye color that arises from interactions between specialized pigment cells named chromatophores. The types of chromatophores present in the avian iris are lacking from the integument of birds or mammals, but are ...
Pedro Andrade +8 more
doaj +1 more source
Proteomic associations with fluctuation and long‐term changes in BMI: A 40‐year follow‐up study
Diabetes, Obesity and Metabolism, EarlyView.Abstract Introduction While some studies have explored associations between weight change and blood proteins, most have been intervention‐based, offering limited insight into proteomic associations with long‐term weight gain. It remains unclear whether plasma proteins are related to BMI fluctuation over time.
Alvaro Obeso +6 more
wiley +1 more source
Results in Chemistry, 2023 Antimicrobial resistance has rendered the sulfonamide class of antibiotics obsolete. An additional binding site on the dihydropteroate synthase (DHPS) enzyme, i.e., the pterin binding site, has been shown to be a valid alternative to the well-known para ...
Maryké Shaw +3 more
doaj
The FEBS Journal, EarlyView.Molybdenum‐dependent formate dehydrogenases (Mo‐FDHs) contain a strictly conserved lysine residue (K44) in the vicinity of an electron‐transferring [4Fe‐4S] cluster and a catalytically active molybdenum atom coordinated by two molybdopterins (MPT‐1 and MPT‐2).
Feilong Li, Michael Lienemann
wiley +1 more source