## Abstract Ecdysteroid titers measured in the haemolymph of third instar larvae of __Drosophila__ revealed the existence of a small peak (40 ng/ml) preceding the major peak at pupariation. Under experimental conditions of delayed pupariation, the release of both ecdysteroid peaks is retarded. The
Ecdysteroid binding activity in embryos of drosophila melanogaster
β Scribed by David L. Osterbur; Mary Alice Yund
- Publisher
- John Wiley and Sons
- Year
- 1982
- Tongue
- English
- Weight
- 327 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0730-2312
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
Ecdysteroid binding proteins have been found in nuclei of Drosophila melanogaster embryos. Comparison of results derived from Scatchard analysis, analogue binding competition, and sucrose gradient centrifugation has revealed no significant differences between the properties of the putative embryonic receptor and those of the receptor found in imaginal disks or K~c~ cells.
π SIMILAR VOLUMES
To investigate the capacity of Drosophila extracts to glucosylate exogenous substrates we have developed a fast and sensitive method for the detection of UDP-glucosyltransferase activity using 4-nitrophenol, 1-naphthol, or 2-naphthol as substrates. High-performance liquid chromatography was used to