Isolation and characterization of pteridines from heads of Drosophila melanogaster by a modified thin-layer chromatography procedure.
An improved thin-layer chromatography technique is described for the separation of fluorescent compounds found in extracts of heads of Drosophila melanogaster. Eighteen to twenty fluorescent spots are resolved, two of which are xanthurenic acid and 3-hydroxykynurenine, and the remaining spots are presumably pteridines. Of these, nine have been identified and quantitated directly on the chromatograms with a fluorometer. One of the spots present on the chromatogram apparently has not been described previous to this work. Characteristics of this substance, termed "quench spot," are presented, several of which indicate that it may be a pteridine or pteridine derivative.
17 references, click to expand
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