Results 31 to 40 of about 3,922 (190)

Pteridines and Lipid Metabolism

Pteridines, 1998
The effect of 9 different pteridines on fatty acid incorporation into phospholipids as well as on cholesterol and phospholipid content was compared in vitro using rat liver homogenate, Krebs-Ringer phosphate buffer containing 0.3 % albumin (pH=7.4 ...
Rudzite Vera, Jurika Edite, Baier-Bitterlich Gabriele, Widner Bernhard, Reibnegger Gilbert, Fuchs Dietmar   +5 more
doaj   +1 more source

Solvent Effects upon the Electronic Absorption and Fluorescence Spectra of Pteridines and Riboflavin and Their Ground and First Excited Singlet State Dipole Moments

Pteridines, 1991
The electronic absorption. fluorescence excitation, and fluorescence emission spectra of a series of pteridines (lumazine, xanthopterin, isoxanthopterin, biopterin) and riboflavin (vitamin B2) were measured at room temperature (298 K) in a number of ...
Aaron J.-J., Gaye M. D., Párkányi C., Boniface C., Bieze T. W. N, Atik S. S., Raghu Veer K. S., Szentpály L. von, Ghosh R.   +8 more
doaj   +1 more source

Pteridine levels and head weights are correlated with age and colony task in the honey bee, Apis mellifera [PDF]

PeerJ, 2016
Background. The age of an insect strongly influences many aspects of behavior and reproduction. The interaction of age and behavior is epitomized in the temporal polyethism of honey bees in which young adult bees perform nurse and maintenance duties ...
Frank D. Rinkevich, Joseph W. Margotta, Jean M. Pittman, James A. Ottea, Kristen B. Healy   +4 more
doaj   +2 more sources

Photoactivated Platinum Complexes: Targeting Membrane Proteins and Organelles for Precision Cancer Therapy

Angewandte Chemie International Edition, EarlyView.
This review highlights an emerging anticancer approach integrating platinum agents into photodynamic therapy (PDT) and photoactivated chemotherapy (PACT) systems, further augmented by cancer cell membrane‐ and organelle‐targeting. By directing photoactivated platinum complexes from nontargeted distribution to cancer cells or defined subcellular sites ...
Shu Chen, Qiyuan Zhou, Jiaqian Xu, Guangyu Zhu   +3 more
wiley   +1 more source

Mutagenesis at Five Pteridine Pathway Loci In Drosophila melanogaster: Genetic and Biochemical Characterization

Pteridines, 1993
In order to carry out a genetic and biochemical analysis of pteridin pathway eye colour loci, sixteen strains of five eye colour mutants of Drosophila melanogaster (2 dke, 7 sf. 3 se, 3 Hnr and 1 bw) from natural populations were used.
Millán J.M., Nájera C.
doaj   +1 more source

Eye Darkening Under Dehydration Stress in the Neotropical Frog Boana punctata (Schneider, 1799)

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.
Dehydration induces a strong and partially reversible increase in iris pigmentation in the Neotropical frog Boana punctata. The tight relationship between iris darkening and hydration state identifies ocular pigmentation as a simple, non‐invasive physiological biomarker with broad potential for assessing hydric stress in amphibian populations ...
Ricardo Reques, Eduardo F. Schaefer, Eduardo A. Sanabria, Leonardo D. Aguiar, Lorena B. Quiroga, Miguel Tejedo   +5 more
wiley   +1 more source

Pteridines, XCVI. Synthesis and Reactions of 6-(1,2,3-Trihydroxypropyl)pteridines

Pteridines, 1990
Various hydropyrano [3.2-g] pteridines (7, 10, 12, 21 , 33) were oxidized to the corresponding 6-(1,2,3- trihydroxypropyl)pteridine derivatives (8,9, 11, 13,32, 34), which are valuable intermediates for the synthesis of new 6-substituted pteridines (15 -
Soyka Rainer, Pfleiderer Wolfgang
doaj   +1 more source

Investigations on the Luminescence Behavior of a Flavin Derivative Incorporated Into Al‐Based Metal–Organic Frameworks for the Sensing of Aromatic Nitro Compounds

Zeitschrift für anorganische und allgemeine Chemie, EarlyView.
For nitro group‐containing volatile compounds, a quenching effect was observed for DAMI@MOF, while the non‐nitro compounds chlorobenzene, toluene, and benzene yielded a fluorescence enhancement, rationalized by the relative energies of the derivative 8‐(dimethylamino)‐10‐methylisoalloxazine (DAMI) and analyte S1 states, with concomitant opposite ...
Annette Vollrath, Vasily Gvilava, Philipp Seiffert, Constantin Czekelius, Christoph Janiak   +4 more
wiley   +1 more source

Saving Water to Survive: Alternative Water Loss Strategies Could Explain Color Polymorphism Maintenance in a Lacertid Lizard

Integrative Zoology, EarlyView.
We demonstrate that red male Podarcis muralis exhibit higher evaporative water loss compared to other morphs, indicating a physiological strategy that prioritizes hydroregulation over fine thermoregulation. This suggests red morphs are adapted to cooler, wetter niches, while white and yellow morphs possess superior water conservation mechanisms to ...
Roberto Sacchi, Stefano Scali, Thomas Dadda, Federico Storniolo, Marco A. L. Zuffi, Andrea Melotto, Stéphanie Sherpa, Federica Frongia, Danny Tassi, Gentile Francesco Ficetola, Marco Mangiacotti   +10 more
wiley   +1 more source

Beyond the Classics: The Synergy of AI and Genomics Reveals an Expanded Repertoire of Pigmentation Genes

Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, Volume 346, Issue 6, Page 475-486, September 2026.
Classical approaches for coloration analysis are limited by human low‐resolution phenotyping and genetic analysis. Artificial intelligence allows us to find genes beyond the tip of the iceberg that explain color and pattern diversity in nature. ABSTRACT Pigmentation has long served as a powerful system for exploring gene–trait relationships, yet much ...
Ehsan Pashay Ahi, Nidal Karagic
wiley   +1 more source