Results 131 to 140 of about 3,953 (191)
Consuming your colors: carotenoid and retinol availability affects expression of color related genes in the mimic poison frog (Ranitomeya imitator). [PDF]
BMC GenomicsRubio AO +4 more
europepmc +1 more source
Neopterin Concentration in Umbilical Cord Blood as a Reflection of Maternal Insulin Resistance-A Pilot Study. [PDF]
Biology (Basel)Chęcińska-Kopeć A +8 more
europepmc +1 more source
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Biochemistry of the Pteridines
Angewandte Chemie International Edition in English, 1972AbstractBiochemical information about the ubiquitous pteridines has become generally available only within the last fifteen years. This delay can be traced to the chemical lability of these compounds and their small concentrations in organisms. New methods of isolation and isotopic techniques have provided data on the biosynthesis, anabolism, and ...
Heinz Rembold, H Rembold
exaly +3 more sources
Polarographic Study of Pteridines
Journal of Pharmaceutical Sciences, 1966The electronegativity of the half-wave potentials of a series of pteridine congeners was found to be related to the substituent groups. The 2,4,7-triaminopteridines, 7-substituted 4-amino-2-aryl-6-pteridinecarboxarnides, and 4,7-diamino-2-aryl-6-pteridinecarboxamides were characterized, in that order, by decreasingly lower electronegative half-wave ...
M, Lapidus, M E, Rosenthale
openaire +2 more sources
Nature, 1948
ALTHOUGH many derivatives of pteridine, both natural and synthetic, are known, the parent substance pteridine (I) does not appear to have been described. This substance has now been prepared by the condensation of 4 : 5-diaminopyrimidine with glyoxal bisulphite.
openaire +2 more sources
ALTHOUGH many derivatives of pteridine, both natural and synthetic, are known, the parent substance pteridine (I) does not appear to have been described. This substance has now been prepared by the condensation of 4 : 5-diaminopyrimidine with glyoxal bisulphite.
openaire +2 more sources
Reductone and the Synthesis of Pteridines
Nature, 1948As we have pointed out1 that the 3-carbon atom unit comprising the ring atoms 6 and 7 and the exocyclic carbon atom (indicated in heavy type) in pteroic acid (I) might be derived from a triose, 3-phosphoglyceraldehyde and phosphodihydroxyacetone being specifically mentioned, the suggestion by O‘Meara, McNally and Nelson2 that the strongly reducing non ...
H S, FORREST, J, WALKER
openaire +2 more sources
Pteridines and affective disorders
Acta Neuropsychiatrica, 2002The pteridine tetrahydrobiopterin (BH4) is an essential cofactor in the biosynthesis of dopamine, (nor)epinephrine, serotonin and nitric oxide (NO). Furthermore, BH4 has a direct influence on release mechanisms of these neurotransmitters and on serotonin receptor binding activityimmunology.
Hoekstra, R (Rosa), Fekkes, Durk
openaire +3 more sources
Pteridines as Pigments in Amphibians
Science, 1964Extracts of brightly colored skins from nine amphibian species were analyzed chromatographically. In yellow skin in which xanthophores predominated, relatively large quantities of sepiapterin were found, while in red skin which was laden with erythrophores, three drosopterins were most prevalent.
M, OBIKA, J T, BAGNARA
openaire +2 more sources
A New Synthesis of Pteridines.
ChemInform, 2006AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Ming Xu, Andrea Vasella
openaire +1 more source