Pteridine Chemistry. V

pteridine ) complexes

The Synthesis and Characterization of Ru(bpy)2(L-pteridine) and Ru(phen)2(L-pteridine) complexes Ruthenium (II) polypyridyl complexes are very important biochemical compounds because of their interactions with DNA. In this study, these complexes are analyzed to understand how their physical properties, chemical properties, and interactions with DNA are affected by structural differences of the ...

A new pteridine from Tetrahymena.

Ciliapterin, a new unconjugated pteridine, has been isolated from the ciliated protozoan, Tefrahymena pyriformis. It has been determined by alkaline permanganate oxidation to be a 2-amino-4-hydroxy-6-substituted pteridine and by acid hydrolytic treatment to possess no labile bonds (such as glycosidic or phosphoester). The substitution at position 6 is dihydroxypropyl, as shown by the identifica...

Pteridine biosynthesis in the butterfly Colias eurytheme.

Linkage of Pteridine Metabolism to Iron Homeostasis*

Iron is an essential growth factor for the proliferation and differentiation of all living cells in being centrally involved in oxygen transport by hemoglobin and myoglobin, in electron transport during mitochondrial respiration as being a part of complex I and II enzymes or in the regulation of transcription via its role as central component of ribonucelotid reductase (1,2). Moroever, iron pla...

Some aspects of pteridine biosynthesis in amphibians.

SOME ASPECTS OP PTERIDINE BIOSYNTHESIS IN AMPHIBIANS by Hamilton Lee Stackhouse Bright fluorescing unconjugated pteridines have been extracted from amphibians; yet the biological function of these compounds in vertebrates is not completely understood. There is some evidence, indicating that they can act as pigments, co-factors, and growthpromoting substances. Pteridine biosynthesis is unknown b...